Tuesday 24 November 2015

Miracle Learning Centre Physics Tuition Question on Electromagnetism. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

Fig. 10.1 shows a metal rod AB placed on two smooth horizontal rails that are fixed in position. The magnetic field is directed perpendicularly into the plane of the paper.

(a) Describe and explain what happens to the rod AB when switch S is closed.

(b) State the effect on the movement of rod AB (if any) when

(i) the current is increased; [1]

(ii) the separation between the rails is decreased. [1]

(c) Suggest one way of reversing the movement of the rod AB. [1]

Miracle Learning Centre Answer to Science Tuition Question on Electromagnetism. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition) 10 (a) AB will move to the right. [A1] A current carrying wire will experience a force when it is placed in a magnetic field. [A1] (b)(i) It will move faster. [A1] (ii) It will move slower. [A1] (c) Reverse the direction of the current / magnetic field [A1]

Miracle Learning Centre Science Tuition Question (S4 Chem) (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

(a) A student was asked to investigate the rate of reaction of magnesium with dilute hydrochloric acid. In the experiment, he used a clean piece of magnesium ribbon 5 cm long with 20.0 cm3 of 0.500 mol/dm3 dilute hydrochloric acid (in excess).

(i) Why is it essential to clean the magnesium ribbon? [1]

(ii) Write a balanced chemical equation for the reaction. [1]

(b) He measured the volume of hydrogen produced at r.t.p. at regular intervals. The results are shown in the graph above.

(i) State the volume of hydrogen gas produced when the reaction is complete. [1]

(ii) Hence, calculate the volume of 0.500 mol/dm3 dilute hydrochloric acid needed to react completely with the 5 cm long ribbon. [2]

(c) Copy the given graph into the writing paper. Then sketch on the same axes, the graphs you would expect if the experiment was repeated, making the following single changes in each case :

(i) Using half the length of cleaned magnesium ribbon. Label this graph A.

(ii) Using a cleaned magnesium ribbon 5 cm long but cut into very small pieces. Label this graph B.

(iii) Using dilute hydrochloric acid of concentration 0.250 mol/dm3. Label this graph C.

(d) Use the particles collision theory to explain your answer to c(iii).

Miracle Learning Centre Answer to Science Tuition Question (S4 Chem) (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

B1(a)(i) 2m Cleaning to remove the magnesium oxide layer from the magnesium ribbon. [1]

(ii) The chemical equation is : Mg + 2HCl  MgCl2 + H2 [1]

(b)(i) 3m From the graph, the volume of hydrogen produce is 55cm3. [1]

(ii) Step 1 : Moles of hydrogen = volume/24dm3 = 0.06dm3/24dm3 = 0.0025 moles [1] Step 2 : Moles Ratio 2HCl : H2 2 : 1 y : 0.0025 y = moles of hydrochloric acid = 0.00125 [1] Step 3 : Volume of hydrochloric acid = moles/moles concentration = 0.00125/0.5 mol/dm3 = 0.0025 dm3 [1]

(c)(i), (ii), (iii) 3

(d) 2m - Since the hydrochloric acid concentration is smaller [1], there are fewer hydrogen ions per unit volume of the acid to collide with the magnesium, causing lesser frequency of ‘effective’ collision and decrease the rate of reaction. [1]

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.


Miracle Learning Centre Primary Maths Tuition Question on Model Drawing. (PSLE Maths Tuition)


1. School A has as many pupils as School B. School B has as many pupils as School C. If School A has 2234 pupils, how many pupils does School C have?
Miracle Learning Centre Answer to Primary Maths Tuition Question on Model Drawing. (PSLE Maths Tuition)
= 1117 1117 X 5 = 5585 School C has 5585 pupils.
Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Maths Tuition Question on Model Drawing. (PSLE Maths Tuition)


1. Faiz, Gary and Subra shared a total of $ 100. Faiz received $ 8 more than Gary. Subra received twice as much as Faiz. How much money did Gary receive ? (Draw a model to help you)
Miracle Learning Centre Answer to Primary Maths Tuition Question on Model Drawing. (PSLE Maths Tuition)
Method 1 4 units ------- $ 100 + $ 8 = $ 108 1 unit ------- $ 108 ÷ 4 = $ 27 27 – 8 = $ 19
Method 2 4 units ------ $ 100 - $ 8 - $8 - $8 = $ 76 1unit ------ $ 76 ÷ 4 = $ 19
Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Maths Tuition Question on Fraction. (PSLE Maths Tuition)

1. When litres of water was poured into a container, it was full. What is the capacity of the container?

2. In a school concert, the number of boys is the number of girls. How many more girls than boys are there if there are 630 pupils at the concert?

Miracle Learning Centre Answer to Primary Maths Tuition Question on Fraction. (PSLE Maths Tuition)

1.  l  l  2 = l  l x 3 = 1 litres or 1.3125 litres 2. 9 units  630 1 unit  70 5 units  350

Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Science Tuition Question on Life Cycle. (PSLE Science Tuition)

1. Jason collected some plants and classified them according to the chart below.

(a) From the table above, what is the difference between the hibiscus and ixora plants? [1]

(b) In the table above, one plant is wrongly classified. Identify the plant? [1]

(c) In the table above, which letter (P, Q or R) represents the `rice plant'? [1]

(d) Since mosquito fern is a non-flowering plant, how does it reproduce? [1]

Miracle Learning Centre Answer to Primary Science Tuition Question on Life Cycle. (PSLE Science Tuition) Answer: a) The Ixora is smaller than the Hibiscus. b) The coconut plant is wrongly classified because the coconut plant has flowers. c) The letter Q represents the rice plant. d) It reproduces by spores.

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Monday 23 November 2015

Best Physics Tuition in Singapore

Physics tuition classes in Miracle Learning Centre is very beneficial. If you do not understand physics, you must definitely try the physics tuition class at Miracle Learning Centre.

Albert Einstein Facts

Albert Einstein is perhaps the most famous scientist of all time. Both his image and brilliant work on theoretical physics live on today and he serves as an inspiration to young scientists around the world.

Read on for interesting facts, quotes and information about Albert Einstein.

Albert Einstein was born on the 14th of March 1879 and died on the 18th of April 1955.

Born in Germany to a Jewish family, Einstein made many contributions to the field of theoretical physics.

Even when very young, Einstein showed great ability in both math’s and science. He was naturally curious and had a brilliant analytical mind.

Einstein worked in a patent office evaluating patents for electromagnetic devices not long after he graduated.

He produced perhaps one of the most famous equations ever: E = mc² (energy equals mass multiplied by the speed of light squared).

He is also well known for his theory of relativity. Special relativity being introduced in his 1905 paper “On the Electrodynamics of Moving Bodies” before Einstein developed the theory of general relativity between the years of 1907 and 1915.

Einstein won the 1921 Nobel Prize in Physics for his work on theoretical physics.

He worked on many other influential theories and projects including: the deflection of light by gravity, the quantum theory of atomic motion in solids, Brownian motion, an explanation for capillary action and much more.

Famous Albert Einstein quotes include: "Whether you can observe a thing or not depends on the theory which you use. It is the theory which decides what can be observed."

"If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.... I do know that I get most joy in life out of my violin."

"Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world."

"I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."


Miracle Learning Centre Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition)


1. Box A has 6x beads. Box B has twice as many beads as Box A. How many beads are there in Box B?
2. The charges for making a telephone call on a mobile phone are given in the table below.
(a) How much must Lihui pay if she used the mobile phone for 12 minutes? Express your answer in terms of y. (b) If y=10 and she paid $4.80 for making a call, how long did she use the phone?
Miracle Learning Centre Answer to Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition) 1. 12x 2. (a) 3y + 2y + 10y = 15y cents / $0.15y (b) $4.80 - $0.30 - $0.20 = $4.30 ( 430  10) + 2 = 45 min
Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition)


1. Find the value of 8p – 5 + 6p – p, if p = 4.
2. A barber charges $h for a haircut. Students are given a 50% discount. How much would he collect from 20 customers, if 7 of them are students?
Miracle Learning Centre Answer to Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition) 1. 47 2. 1student haircut costs $ or $0.5h Total cost = (7 x $ ) + (13 x $h) = $3 + $13h = $16 h or $16.50h
Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Best Physics Tuition in Singapore

Physics tuition classes in Miracle Learning Centre is very beneficial. If you do not understand physics, you must definitely try the physics tuition class at Miracle Learning Centre. Let us learn about the Introduction to Flight

Give students an enjoyable introduction to the world of flight with some fun activities, interesting facts and cool demonstrations

Teach them about the forces involved in flying such as lift, gravity, thrust and drag as well as Bernoulli’s principle and much more. This flying lesson plan is perfect for kids.

Introduction: People have always understood that flight was possible from observing birds, but it took thousands of years to actually achieve and there were many hurdles along the way. What are some examples of things that fly? Birds, planes, hot air balloons etc Can you group them into different types of flight? How about grouping them into natural and man made things? Flying is defined as controlled movement through the air and includes sustained, controlled and powered flight. Flight is the actual process of flying, many things can become airborne but are they actually flying and under control? What role does gravity play in our efforts to fly?

Wings, aerofoils and the forces of flying: Let’s look at some of the common characteristics of things that fly. Looking at bird wings and plane shapes the main characteristic is the aerofoil shape. The wings of birds and planes have what is called an aerofoil shape. This aerofoil shape helps us overcome weight which is the effect of gravity pulling down on the mass of the aircraft. The aerofoil shape gives us something called lift. This is the upward force required to overcome gravity, being produced by a wing as it moves through the air. This action allows the object to lift up and push forward. Something that slows us down is drag, which is the resistance to airflow and consequently slows the progress of an aircraft through the air, arising from disturbing the air as it moves through it, and from the skin friction due to the viscosity or ‘stickiness of the air. The drag force is opposite to the flight path. Thrust is the forward force required to move an aircraft through the air, overcoming drag (and providing sufficient speed for a wing to develop enough lift to fly). This must be provided by an engine, by gravity (glider, sailplane) or by muscles (birds).

How do we control flight? Control of an aircraft is on three axes: Yaw, pitch and roll. Moving parts of the wing, tailplane and fin surfaces change the the camber of these parts and affect their lift (and their drag) and provide forces to change the aircraft’s path. Rudder controls Yawing (left/right) Elevators control pitching (nose up/down) Ailerons control rolling

Bernoulli's principle: Bernoulli’s principle helps explain that an aircraft can achieve lift because of the shape of its wings. They are shaped so that that air flows faster over the top of the wing and slower underneath. Fast moving air equals low air pressure while slow moving air equals high air pressure. The high air pressure underneath the wings will therefore push the aircraft up through the lower air pressure.

Demonstrations: There are a number of useful demonstrations you can do to help explain flight, they include: Using a hairdryer to float ping-pong or polystyrene balls. Releasing a blown up balloon so that it flies up a string connected from one side of a room to the other. Helium balloons. Giant air blowers to help show the Bernoulli principle in action. Throwing paper airplanes of different designs, which work better and why?

Activities: Your challenge is to hold a rectangular piece of paper close to your mouth, blow across the top of it and get the paper to move down. Sounds simple enough but give it a go and see if you change your mind. Next, try and make a piece of paper into a simple bridge and get the bridge to rise up by blowing under it. Your final challenge is to hold 2 paper strips near your mouth, blow between them and get them to fly apart.

What's happening? You might find they results of these challenges surprising. You blew across the paper and it went up rather than down! You blew under the bridge and the bridge went down, rather than up. You blew between the streamers and they moved in, not out. Your fast moving breath has less push (less air pressure) than the still air below the paper. The still air with the greater pressure pushes up into the low pressure area. It lifts the paper up with it. These interesting results are due to the Bernoulli effect, remember it because it plays an important role in our ability to fly.

Miracle Learning Centre Physics Tuition Question on Energy. (PSLE Science Tuition)

3. Doris took out a stick of ice-cream from the freezer. She left it on the table when the house phone rang and forgot all about it. After some time, it melted. Which one of the following statements is true about the melting ice-cream?

(1) The ice-cream loses heat and turns to liquid.

(2) The ice-cream gains heat and changes to gas.

(3) The ice-cream loses heat to the surrounding and retains its state.

(4) The ice-cream gains heat from the surrounding and changes its state.

Miracle Learning Centre Answer to Primary Science Tuition Question on Energy. (PSLE Science Tuition) Answer: 4

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Science Tuition Question on The Human Eye. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

1(a) A tennis player looks closely at his tennis racquet and ball before he hits his serve. After his serve, he looks at his opponent and adjusts his racquet in anticipation. Describe the changes which take place when the eye focuses on the ball

(i) closely before his serve ,

(ii) from a distance after his serve.

(b) During the lunch interval of a cricket match, the cricketers go indoors for their rest and meal. After the interval, they proceed to the field to resume the match under bright sunlight. Explain how the sudden bright light brings a response in the tissues in the iris. [4]

Miracle Learning Centre Answer to Science Tuition Question on The Human Eye. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Science Tuition Question on Photosynthesis. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

1(a) Fig 1.1 was set up to show that a certain factor is needed for photosynthesis. The whole set up was placed in the dark for 24 hours and exposed to sunlight for another two hours.

(i) Suggest a reason why the plant was placed in the dark for 24 hours. ………………………………………………………………….……………..... …………………………………………………………………………………..

(ii) 1. State the factor that the set-up in Fig. 1.1 was testing. …………………………………………………………………………………..

2. Give evidence from the set-up to support your answer. ………………………………………………………………….……………..... …………………………………………………………………………………..

(iii) At the end of the experiment, one of the leaves was tested for presence of starch. 1. State the expected result for the starch test. ………………………………………………………………………………….. [1] 2. Explain your answer. ………………………………………………………………….……………..... …………………………………………………………………………………..

(iv) Suggest a control for this experiment. ………………………………………………………………………………….. [1]

(b) Fig. 1.2 shows the plant where its bark around the stem at region X was treated with a jet of super-heated steam.

(i) Predict what would be observed one week later. ………………………………………………………………………………….. [1]

(ii) Give reasons to support your answer. ………………………………………………………………….……………..... ………………………………………………………………….……………..... ………………………………………………………………………………….. [2]

(iii) State a substance that could be found in the fluid extracted from the bark just above region X. ………………………………………………………………………………….. [1]

Miracle Learning Centre Answer to Science Tuition Question on Photosynthesis. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Science Tuition Question on Human Respiration. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

1(a) What is the main difference between respiration and breathing?

(b) In what ways are the following adapted for gaseous exchange?

(i) leaves of flowering plants and

(ii) the lungs of humans.

(c) The table below gives the approximate percentage volume composition of inhaled and exhaled air in man.

Briefly explain events occurring in the body that brought about the differences.

Miracle Learning Centre Answer to Science Tuition Question on Human Respiration. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Best Science Tuition in Singapore

Miracle Learning Centre Science Tuition Question on Human Reproduction. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

1 Some women have fertility treatment using hormones to help them to have babies. In one type of treatment, eggs are fertilised outside the body, then inserted into the woman’s womb.

Table 3.1 shows the statistics for this type of treatment from a fertility clinic for one year.

Use the data in the table to help you answer the questions below.

(a) What is the relationship between age and the success of fertility treatment? _______________________________________________________________ _______________________________________________________________ ____________________________________________________________[1]

(b) How many of the women aged 38–40 became pregnant as a result of the fertility treatment?

_______________________________________________________________ ____________________________________________________________[1]

(c) (i) Give one advantage of this type of fertility treatment.

_______________________________________________________________ _______________________________________________________________ ____________________________________________________________[1]

(ii) Give one disadvantage of this type of fertility treatment.

_______________________________________________________________ _______________________________________________________________ ____________________________________________________________[1]

(d) Fig. 3.2 represents four possible types of fertilization and development

Which type of fertilisation and development (A, B, C or D) would produce: (i) one female baby: _______________________________________[1] (ii) identical male twins? ____________________________________[1]

(e) Table 3.3 shows some of the stages in the production of in vitro (test tube) babies.

Suggest two features that the culture medium must have if the production of test tube babies is to be successful.

1 _________________________________________________________ 2 ______________________________________________________[2] [Total:8]

Miracle Learning Centre Answer to Science Tuition Question on Human Reproduction. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition) 1 Some women have fertility treatment using hormones to help them to have babies. In one type of treatment, eggs are fertilised outside the body, then inserted into the woman’s womb. Table 3.1 shows the statistics for this type of treatment from a fertility clinic for one year.

Use the data in the table to help you answer the questions below.

(a) What is the relationship between age and the success of fertility treatment? • success of fertility treatment decreases with age • success of treatment increases after or at ages 40/41/42 [½m @]

(b) How many of the women aged 38–40 became pregnant as a result of the fertility treatment? 45% of 40 = 45/100 X 40 = 18

(c) (i) Give one advantage of this type of fertility treatment. • helps infertile women increases chance of pregnancy • allows single women to become pregnant • reduced risk of STD • storage of eggs for future use • embryo selection [any 1 ans]

(ii) Give one disadvantage of this type of fertility treatment. • risk of failure/still birth • neutral: • side effects • moral issues e.g. unnatural • expensive • results in multiple births [any 1 ans]

(f) Fig. 3.2 represent four possible types of fertilization and development.

Which type of fertilization and development (A, B, C or D) would produce: (iii) one female baby: B [1] (iv) identical male twins? D [1]

(g) Table 3.3 shows some of the stages in the production of in vitro (test tube) babies.

Suggest two features that the culture medium must have if the production of test tube babies is to be successful. • suitable temperature / body temperature / warm • suitable pH (6-7) • oxygen • nutrients / energy from food • suitable concentrations of / right amount of nutrients • sterile • accept clean if qualified

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Best Science Tuition in Singapore

Miracle Learning Centre Science Tuition Question on Food Chain/Web. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

1 Over a period of several months, a student recorded some activities of the wild life in a particular habitat. The following observations appeared in her notebook.

(a) Complete Fig. 5.1 by filling in the names of the organisms to show the trophic levels (feeding relationships) in this community.

(b) (i) What name is given to a chart of trophic levels as shown in Fig. 5.1? ______________________________________________________[1] (ii) Name one tertiary consumer. ______________________________________________________[1] (c) Fig. 5.1 also shows how much energy from the bean plants is transferred to each trophic level in the relevant food chain. (i) Where does the energy stored in the bean plants originally come from? ______________________________________________________[1] (ii) Calculate the percentage of energy in A that is transferred to organism B. Show your working. _________________________________________________________ ______________________________________________________[2] (iii) Describe two ways in which energy is lost within a level of a food chain. 1 ___________________________________________________ 2 ________________________________________________[2] (iv) This food chain has four trophic levels. Most food chains have no more than five trophic levels. Explain why the length of food chains is limited in this way. _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________[2] [Total: 12]

Miracle Learning Centre Answer to Science Tuition Question on Food Chain/Web. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

(a) Complete Fig. 5.1 by filling in the names of the organisms to show the trophic levels (feeding relationships) in this community.

(b) (i) What name is given to a chart of trophic levels as shown in Fig. 5.1? food web

(ii) Name one tertiary consumer.

hawk / spider

(c) Fig. 5.1 also shows how much energy from the bean plants is transferred to each trophic level in the relevant food chain. (i) Where does the energy stored in the bean plants originally come from? sun / solar energy [1]

(ii) Calculate the percentage of energy in A that is transferred to organism B. Show your working. 130 x 100% = 11.8% 1100

(iii) Describe two ways in which energy is lost within a level of a food chain. 1 lost as heat during respiration / in the faeces as undigested food 2 used for growth / movement / reproduction [2]

(iv) This food chain has four trophic levels. Most food chains have no more than five trophic levels. Explain why the length of food chains is limited in this way. • Because of inefficient energy transformation,a shorter food chain reduces energy losses between trophic levels. • The energy available for the highest trophic level might be too little to sustain the population. [2] Total: 12]

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Saturday 21 November 2015

Miracle Learning Centre Primary Science Tuition Question on Energy. (PSLE Science Tuition)

3. Doris took out a stick of ice-cream from the freezer. She left it on the table when the house phone rang and forgot all about it. After some time, it melted. Which one of the following statements is true about the melting ice-cream?

(1) The ice-cream loses heat and turns to liquid. (2) The ice-cream gains heat and changes to gas. (3) The ice-cream loses heat to the surrounding and retains its state. (4) The ice-cream gains heat from the surrounding and changes its state.

Miracle Learning Centre Answer to Primary Science Tuition Question on Energy. (PSLE Science Tuition) Answer: 4

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Science Tuition Question on Energy. (PSLE Science Tuition)

2. Roger set up the experiment below with an iron rod and a glass rod of the same size. He used two retort stands to secure the rods. He then used some wax to attach four pins, A, B, C and D at equal distance apart from the burner.

Roger turned on the burner to heat up the rods at the centre marked X. (a) Which pin(s) will drop after 10 minutes of heating? Explain your answer.

(b) Write down the order in which the pins will drop during the heating process.

(c) From the observation of the experiment above, which type of spoon, metal or porcelain when placed in a cup of hot coffee will help it to cool faster? Explain your answer.

Miracle Learning Centre Answer to Primary Science Tuition Question on Energy. (PSLE Science Tuition) Answer: a) All the pins as heat travels through all things. After 10 minutes the glass part of the rod will get heated up too. b) B, A, C, D c) The metal spoon. It would absorb the heat faster as it is a good conductor of heat where the porcelain spoon is a poor conductor of heat, thus it takes a longer time to absorb the heat.

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Best Maths Tuition in Singapore

Math could also be a basic talent in life and its applications unit of measurement strewn everyplace the walks of life. Doing subject with seriousness may be a very important aspect of in education and it needs coming up with right from one's childhood. Following unit of measurement the reasons why kids ought to learn subject.

1. Gathering draw back finding skills: the problems area unit the lifeline of subject. Once students solve subject problems in its varied branches, they gather skills to organize knowledge, originated the info and take a glance at hypotheses.

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3. Gate keeper subject for various tutorial subjects: subject is that the access for Science subjects like Physics and Engineering. whereas not subject skills, accomplishment in higher studies is out of the question.

4. massive scope for numerous careers: Right from portable computer programmers to tradesmen and doctors, people wish mathematical info in their numerous fields. Elementary info in subject paves methodology for in career prospects.

5. Proving smarter in work places: subject deals with analytical capabilities, structure and structure skills. Any leader expects his employee to face troublesome things inside the point with AN analytical brain and provides a solution to things. subject skills kind somebody's analytical skills to a wonderful extent.

Many factors enter for making in makes a shot in obtaining subject skills. One is that the motivation of the lecturers towards positive subject learning. Lecturers need to manufacture galvanized students and kind their brain with subject sensibilities. It have to be compelled to begin from the primary childhood of the young learners to push their positive learning attitudes towards subject.

Best Chemistry Tuition in Singapore

The right chemistry tutor is additionally the key to your child's high school success. Sooner or later, your child will take high school chemistry, a required course that every college-bound student must master. Not like his/her previous high school classes, however, chemistry may cause a latest challenge to your student. though your faculty|high school} student might need excelled in science since school, chemistry will presumptive be his/her first brush with higher level science. Not having had such associate degree experience before, your child can merely wander off before s/he is tuned in to it. Further, anyone aiming to pursue the advanced sciences got to conquer the hurdle referred to as chemistry. Even adults, UN agency understand themselves, throughout this economy, going back to high school, understand they have to pass chemistry therefore on pursue their chosen field.

Good chemistry tutors ar usually a life saver. A chemistry tutor can facilitate your child approach the advanced field of chemistry by presenting chemistry in manageable and understandable things. S/he can build chemistry understandable and pleasant. a good chemistry tutor can supplement your child's learning among the room and check that that s/he masters content and never falls behind.

How are you able to acknowledge once your child needs a chemistry tutor? perhaps not having needed a tutor before, your child is additionally the last one to boost you for one. usually as of us, we would like to be wise detectives. As such, explore for the next clues.

• Is your child's chemistry grade below his various grades?

• will he avoid his chemistry homework?

• Has his teacher suggested s/he is additionally falling behind?

• are you home-schooling your child, entirely to go looking out that the chemistry work can be a awfully very little on the so much facet your comfort zone?

What makes a good chemistry tutor?

1. but well can s/he grasp the subject matter?

The better your tutor is tuned in to the subject, the extra creative s/he ar usually in teaching the subject to you. there is nothing worse than having a teacher or tutor UN agency is "a chapter ahead."

2. but well can your tutor grasp pedagogy?

How educated is your tutor among the art of teaching? the extra teaching education and data, the extra techniques s/he has at his/her disposal to make chemistry clear and understandable.

3. can your chemistry tutor communicate well?

Do you feel that your tutor understands yours and your child's needs? can your tutor report progress effectively?

4. Is your chemistry tutor patient?

Does your tutor maintain pace at the side of your child's learning, using a sort of utterly totally different tools to make learning partaking and effective? can your tutor merely give you answers, or guide you to go looking out the answers yourself?

Even if your child appearance to be handling the utilization of his new, harder chemistry course, with the ever-increasing competition for college admissions, associate degree O level chemistry tutor is additionally merely the insurance he must extremely comprehend chemistry and notice the grade he must attend the best university of his choice.

The room uses a tested system that simplifies the educational method for middle school students. this technique solidifies their learning, permits them to realize higher grades and boosts their confidence levels.

Friday 20 November 2015

Miracle Learning Centre Primary Science Tuition Question on Diversity. (PSLE Science Tuition)

5. A plant was put in a black box with an opening on the left side as shown in the diagram below. What do you think will happen to the plant after one week?

(1) It will not grow (2) It will grow upwards only (3) It will grow downwards only (4) It will grow towards the opening

Miracle Learning Centre Answer to Primary Science Tuition Question on Diversity. (PSLE Science Tuition) Answer: 4

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Science Tuition Question on Diversity. (PSLE Science Tuition)

6. Which one of the following statements is false?

(1) Living things can die. (2) Living things can grow. (3) Living things need air, food and water. (4) Living things can move from place to place by themselves.

Miracle Learning Centre Answer to Primary Science Tuition Question on Diversity. (PSLE Science Tuition) Answer: 4

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Science Tuition Question on Diversity. (PSLE Science Tuition)

Study the classification chart below carefully

Miracle Learning Centre Answer to Primary Science Tuition Question on Diversity. (PSLE Science Tuition) Answer: 4

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes

Thursday 19 November 2015

Miracle Learning Centre Primary Science Tuition Question on Life Cycle. (PSLE Science Tuition)

1. Study the classification chart below.

(a) Suggest an appropriate heading for Group X and Group Y respectively. [1] Group X: Group Y. Gary found a nymph of an insect and decided to keep it for a period of time for observation. He noticed that it moulted several times before becoming an adult.

(b) How many stages are there likely to be in the life cycle of the insect that Gary was studying? [1] (c) Why did the nymph moult? [1]

Answer to Primary Science Tuition Question on Life Cycle. (PSLE Science Tuition) Answer: 1a) X: 3 – stage life cycle Y: 4- stage life cycle b) There are 3-stges in the life cycle of the insect Gary was studying. c) The nymph moulted because it had to shed its skin as it was growing bigger, and its skin was too small.

Miracle Learning Centre Primary Science Tuition Question on Systems. (PSLE Science Tuition)

5. Which pair of animals breathes through its gills?

(1) Bees and ants

(2) Seahorses and dolphins

(3) Goldfishes and lionfishes

(4) Monkeys and elephants

Miracle Learning Centre Answer to Primary Science Tuition Question on Systems. (PSLE Science Tuition) Answer: 2

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Miracle Learning Centre Primary Science Tuition Question on Systems. (PSLE Science Tuition)

Label the parts of the insect using the helping words provided above. [2] (a) (i) (ii) (iii) (iv)

(b) How many body parts does the insect have? [1]

(c) What does the insect have to protect its body with? [1]

Miracle Learning Centre Answer to Primary Science Tuition Question on Systems. (PSLE Science Tuition) Answer: a) (i) Antennae (ii) head (iii) thorax (iv) abdomen b) An insect has 3 body parts. c) The exo-skeleton.

Learn from our Primary Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Wednesday 18 November 2015


Best Maths Tuition in Singapore


Miracle Learning Centre Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition)
1. Box A has 6x beads. Box B has twice as many beads as Box A. How many beads are there in Box B?
2. The charges for making a telephone call on a mobile phone are given in the table below.
(a) How much must Lihui pay if she used the mobile phone for 12 minutes? Express your answer in terms of y. (b) If y=10 and she paid $4.80 for making a call, how long did she use the phone?
Miracle Learning Centre Answer to Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition) 1. 12x 2. (a) 3y + 2y + 10y = 15y cents / $0.15y (b) $4.80 - $0.30 - $0.20 = $4.30 ( 430  10) + 2 = 45 min
Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Best Maths Tuition in Singapore


Miracle Learning Centre Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition)
1. Find the value of 8p – 5 + 6p – p, if p = 4.
2. A barber charges $h for a haircut. Students are given a 50% discount. How much would he collect from 20 customers, if 7 of them are students?
Miracle Learning Centre Answer to Primary Maths Tuition Question on Algebra. (PSLE Maths Tuition)
1. 47
2. 1student haircut costs $ or $0.5h Total cost = (7 x $ ) + (13 x $h) = $3 + $13h = $16 h or $16.50h
Learn from our Primary Maths Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Maths tuition, Science tuition, Chemistry tuition and Physics tuition classes.

Best Science Tuition in Singapore

Miracle Learning Centre Science Tuition Question on S1 Science. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

Miracle Learning Centre Answer to Science Tuition Question on S1 Science. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)

Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.


Best Science Tuition in Singapore


Miracle Learning Centre Science Tuition Question on S1 Science (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)
C1(a) Compare at least 2 differences between epithelial tissues and epidermal tissues. [2]
(b) Multicellular organisms benefit from division of labour as it allows different types of cells to perform their specific functions to maintain life processes in multicellular organisms effectively and efficiently. What is the disadvantage of division of labour? [2]
(c) The diagram below shows 6 different aliens P, Q, R, S, T and U.



Use the Creature Identification Key above to identify creatures P, Q, R, S, T and U. [6] Total marks for C2: [10]
Miracle Learning Centre Answer to Science Tuition Question on S1 Science. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)


Learn from our Science Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Science tuition, Maths tuition, Chemistry tuition and Physics tuition classes.

Tuesday 17 November 2015


Best Physics Tuition in Singapore


Physics Tuition classes in Miracle Learning Centre is very beneficial. If you do not understand physics, you must definitely try the physics tuition class at Miracle Learning Centre. Let us learn about the Make Your Own Rainbow.

Make Your Own Rainbow


Learn how to make a rainbow with this fun science experiment for kids. Using just a few simple everyday items you can find out how rainbows work while enjoying an interactive, hands on activity that’s perfect for kids.

What you'll need:


A glass of water (about three quarters full) White paper A sunny day

Instructions:


Take the glass of water and paper to a part of the room with sunlight (near a window is good). Hold the glass of water (being careful not to spill it) above the paper and watch as sunlight passes through the glass of water, refracts (bends) and forms a rainbow of colors on your sheet of paper. Try holding the glass of water at different heights and angles to see if it has a different effect.

What's happening?


While you normally see a rainbow as an arc of color in the sky, they can also form in other situations. You may have seen a rainbow in a water fountain or in the mist of a waterfall and you can even make your own such as you did in this experiment. Rainbows form in the sky when sunlight refracts (bends) as it passes through raindrops, it acts in the same way when it passes through your glass of water. The sunlight refracts, separating it into the colors red, orange, yellow, green, blue, indigo and violet.

Best Science Tuition in Singapore


Science tuition classes in Miracle Learning Centre is very beneficial. If you do not understand science, you must definitely try the science tuition class at Miracle Learning Centre. Let us learn about Egg Float in Salt Water.

What you'll need:


One egg Water Salt A tall drinking glass

Instructions:


Pour water into the glass until it is about half full. Stir in lots of salt (about 6 tablespoons). Carefully pour in plain water until the glass is nearly full (be careful to not disturb or mix the salty water with the plain water). Gently lower the egg into the water and watch what happens.

What's happening?


Salt water is denser than ordinary tap water, the denser the liquid the easier it is for an object to float in it. When you lower the egg into the liquid it drops through the normal tap water until it reaches the salty water, at this point the water is dense enough for the egg to float. If you were careful when you added the tap water to the salt water, they will not have mixed, enabling the egg to amazingly float in the middle of the glass.

Best Chemistry Tuition in Singapore



Fun Crystal Activities


Crystals are special structures that can be used in a number of great science experiments. Try the fun crystal activities in this lesson plan and let kids make crystals, learn about their physical properties and have fun at the same time.

Introduction:


Ask what your students already know about crystals. Maybe they know they can find some in their kitchen cupboard at home in the form of jelly crystals, sugar, salt etc.

A crystal is a regularly shaped solid with flat surfaces. The tiny particles inside the crystals are arranged side by side, and on top of each other in symmetrical patterns. This is what makes a crystal special.

No two crystals are the same and there are lots of different shapes that crystals can make, the flat surfaces of these crystals are called ‘faces’.

Not all crystals you see will actually look like crystals to you, this is because they aren't perfectly formed. Sometimes there is not enough space or it’s too hot or cold for the crystals to grow perfectly. When this happens you often end up with different and unusual looking crystals.
Crystals that are perfectly formed are often worn as jewelry because of their beautiful aesthetic quality.

Now that we know a little bit more about crystals, let’s try some fun activities!

Crystal Activities:


Create a crystal solution by mixing 2 cups of sugar (or 3 tablespoons of borax) into a cup of hot water until it is fully dissolved.
Find a piece of black card.
Dip your paintbrush into the crystal solution.
Paint your snow picture. (It will be invisible at first so you will have to imagine what you are drawing).
Hold the picture in front of the heater and your picture will appear like magic.
So what’s happening? The liquid in the solution evaporates, leaving behind a film of delicate crystals in the shape of what you drew earlier.

Copper Sulphate Crystals


Take a clean film canister.
Put one teaspoon of copper sulfate (blue powder) into your film canister.
Half fill the canister with warm water (adult supervision is a good idea for this part).
Put the lid on firmly, and shake gently for around 30 seconds.
When you get home, take the lid off the canister and put it in the sun and watch as your crystals grow.
Remember to wash your hands and clean up any mess when you’re finished.

Panning For Crystals


Take a number of different colored sands and pour them into a pan.
Add one cup of water so you can separate the minerals.
Gently tilt the pan around in a circular motion, so that a little wave of water washes over the sand.
The heavier grains don’t move very much but the lighter grains do. This is how the crystals separate.
Sort the minerals into different colors before choosing your favorite to put into a vial to keep for yourself. You can also try layering the different colored minerals on top of each other.

Other Crystal Activities:


Make bath crystals using epsom salts, perfume and food coloring.
Make sherbet out of jelly crystals, citric acid, baking soda and icing sugar.
Make a crystal snowflake using borax.
Drawing and coloring different 3D crystal shapes.
Examining crystals under a microscope.

Best Chemistry Tuition in Singapore


Chemistry tuition classes in Miracle Learning Centre is very useful. If you do not understand chemistry, you must definitely attend the chemistry tuition class at Miracle Learning Centre. Let us learn about atomic structure in this chemistry tuition lesson.

Glue Making Activity


Make glue with this fun chemistry activity for kids. Learn the basic science properties of glue and put your finished product to the test. Enjoy the fun ideas that this science lesson plan offers.

Introduction:


This glue was used as far back as early Egyptians who used it in the construction of their boats. This same glue was used on some World War 1 aircraft. Let's make some of our own and see if it works!

Glue making activity:


Pour 50ml of milk into a beaker and gently warm it until it has just started simmering. Add 5ml of vinegar and watch as the milk separates into curds (solid) and whey (liquid). Filter the curds through a cloth with small holes in it (or a sieve). Put the curds into a small container and add 5mls of ammonia solution. Heat and stir the mixture until a thick creamy liquid forms. This is the glue. Allow the glue to cool.

After you've finished:


From here you can put your glue to the test. Use your glue to help build a small house made of sticks, add objects to a poster or collage, or for any other project that you need glue. How well did your homemade glue stick objects together?

Friday 13 November 2015


Best Chemistry Tuition in Singapore


Chemistry tuition in Singapore is in nice demand that is as a result of its importance in creating a promising career. several folks have felt the requirement of keeping a chemistry teacher for his or her kid.

The characteristics of a good chemistry teacher


A good chemistry teacher ought to have a sound data of the topic and may ideally have a Bachelors or academic degree in Chemistry. He ought to be clear in explaining the ideas of the topic. The chemistry teacher should also be experienced in teaching the A and O levels of chemistry. He should ideally be proficient enough to download the knowledge to his students. The chemistry tutor ought to have smart communication skills together with patience. he's expected to stay his cool whereas teaching the scholars and may not lose his temper each currently so.

The chemistry tutor ought to have smart communication skills together with patience. he's expected to stay his cool whereas teaching the scholars and may not lose his temper each currently so. Most of the qualified tutors for Chemistry in Singapore have a Bachelor's degree in chemistry which is supposed to be the minimum required qualification to become a tutor. It is unremarkable seen in Singapore than on a mean a student takes home tuition. it's quite common in Singapore for the scholars to require tuition and for this Singapore is usually referred as "Tuition Nation".

In Miracle learning Centre Chemistry tuition as against what is being done in regular school is resorted to, in few cases where the students are not able to follow their lessons well and wants to improve his performance and boost up their faith in themselves. In some cases where parents want their child to sit and studies because after school they not even interested to touch the textbooks. We think that tuition are unarguably the worth considering solution to helps the students in ameliorating their grades. That days are gone when people use to think about private tuition classes for students is for distinguished who were either bad at their studies or to the one who belonged to the elite community. Nowadays these thinking are all withdrawn now it has become a necessity rather a luxury.