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Module 2- Force & Energy

SECTION A Answer all questions.

Every question is followed by four answer A, B, C and D. Choose the correct answer. Then, blacken your answer on the answer sheet provided. The suggested time for this section is 45 minutes. If you are unable to answer a question, proceed to the next question.

1 The diagram below shows four different objects.

Which of the following sources can produce electricity?

2 Which of the following symbols represent a battery in a circuit diagram?

A C

B D

A C

B D

MMoodduullee 22

YYeeaarr 55

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3 Diagram shows a circuit.

Which of the sequence shows the correct energy transformation when the bulb lights up? A Chemical energy Light energy. B Electrical energy Light energy. C Chemical energy Electrical Energy Light + Heat energy. D Electrical energy Chemical energy Light + Heat energy

4 Which of the following appliances can change the electrical energy into heat energy? 5 What is ‘I’ in the information below?

A B

C D

• I have positive pole and negative pole.

• I am the source of electricity in an electric circuit

A C B D

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6 Which of the following bulbs will light up?

7 Diagram shows a component in a circuit.

What is the function of the component? A Produces light B Supplies electrical C Connect and breaks electric circuit D Connects the components in an electric circuit. 8 Which of the following objects use dry cell as the source of electrical energy?

A C

B D

A

B

C

D

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9 Which of the bulbs in the following circuits will not light up?

10 Diagram shows four pictures.

Which of the following pictures possess kinetic energy? A P and R B P and S C Q and R D Q and S

A C

B D

P R

Q S

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11 Diagram shows three activities. Which of the following activities require energy? A J only B J and K only C J and L only D J, K and L. 12 Which of the following objects can change electrical energy into sound energy?

13 Diagram shows a television. Which types of energy is not involved when the television is switched on? A Sound energy B Light energy C Kinetic energy D Electrical energy

J K L

A C

B D

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14 Diagram shows two objects.

What is the source of electrical energy for object P and Q in the diagram above?

P Q

Accumulator Dry cell

Hydroelectric power Solar cell

Dynamo Accumulator

Solar cell Hydroelectric power

15 Which of the following pairs is the correct symbol for the electrical component?

16 Diagram shows four objects.

A P and Q B P and R C Q and R D Q and S

A

B

C

D

P Q

Electrical

component Symbol

A

B

C

D

Which object will produce shadow when light is directed towards it?

P Q R S

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A B

C D

17 Diagram shows a solar powered calculator.

In a calculator, the solar energy is transformed into A electrical energy B light energy C heat and light energy D electrical and light energy 18 Which is the main source of energy?

19 Diagram 9 shows the side mirror of a car. A is blocked B is reflected C is absorbed D travels in a straight line

We can see objects in this side mirror because light 0.

Diagram 9

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screen

ball

Light source

20

21. Mr. Tan used a plug with broken insulation wire. What are the possible dangers ? I Electric shock II Fire III Burn IV Electrocuted A I, II and III only B I, II and IV only C II, III and IV only D I, II, III and IV 22. Which will not happen when a substance gains heat? A The substance will expand. B The substance gains energy. C The substance becomes warmer. D The temperature of the substance will decrease.

23. Which of the following is the metric unit for measuring temperature ? A Degree Celcius B Cubic metre C Kilometre D Millilitre 24. Amira found a dented ping pong ball in his cupboard. Which of the following methods enables the ping pong ball to be used again ? A Cool the dented ping pong ball in cold water. B Heat the dented ping pong ball in hot water. C Rub the dented ping pong ball with wet towel. D Bounce the dented ping pong ball on a soft carpet.

The diagram shows a shadow of a ball on the screen. What will happen to the shadow if the ball is moved closer to the light source?

A Its size become smaller. B Its size become bigger C Its size does not change.

D It becomes clearer.

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25. There are gaps at railway tracks. These gaps are important because A they can enable the trains to move faster. B they allow for expansion in cold weather. C they allow for expansion in hot weather. D they can prevent the railway tracks to contract in cold weather. 26 What is the meaning of energy ? A The food we eat. B Ability to do work. C To carry out our life processes. D To move or transport non living thing. 27 Below are information about an electric circuit. Based on the information above, what is object X ?

A Iron nail B Pencil C Straws D Plastic spoon 28 Figure 6 shows a combination circuit.

Figure 6

What will happen to the bulbs if bulb Q is burnt out ?

I Bulb P will not light up. II Bulbs R and S will still light up. III Bulbs P,Q and R will still light up. IV All the bulbs will not light up.

- Dry cell bulb and connecting wires are provided - Set up and electric circuit - Connect to object X - The bulb is lighted up

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A I and II B I and III C II and III D I, II and IV 29 Which of the following is true about solar energy in figure below?

Figure 7 I It is renewable II It is available day end III It is used to power calculator IV It is used to power space satelite

A I and III B III and IV C I, II and IV D I, II, III and IV

30 A bulb will light up when the switch is on. What is the changes of the energy in figure below ?

A There is no energy changes. B Electrical energy changes to heat energy only. C Electrical energy changes to light energy only. D Electrical energy changes to light energy and heat energy.

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Section B Answer all questions

1 a) State the arrangement of bulbs in the circuits shown below. a)

b)

[ 2 Marks)

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b) Label the part of electric circuit shown below.

2. a) Match the object to the source of energy used correctly.

i)

ii)

i)

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b) Match the statements to the correct diagrams.

[4 Marks] 3. Fill in the blanks with the correct answers. a) The light on Earth comes mainly from the_____________________

b) ___________________ is formed when light is blocked by an opaque object.

c) ___________________ energy is the energy that can be replenished when used up.

d) Dry cells provide ___________________ energy.

[4 Marks]

Reflection of light

Light travels in a straight line

i)

ii)

sun Shadow star Renewable

Non-renewable chemical potential shape

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4. Read the statements below and state “True” or “False” in the appropriate boxes below.

a) The Sun is the main source of light and heat energy.

b) An opaque object does not let the light pass through it.

c) An iron change electrical energy to light energy.

d) A shadow is formed when there is no light source.

[4 Marks]

5. The results of the fair test are recorded and shown in the table below.

Distance between the object and the torchlight (cm)

Size of shadow formed on the screen (cm)

100 4

80 6

60 8

40 10

20 12

a) What is the aim of the fair test.

To investigate the relationship between ____________________ and ____________________________ .

[1 Mark]

b) What is the trend of size of the shadow formed on the screen?

__________________________________________________________ [1 Mark]

torchlight

object

shadow

screen

The diagram below shows a fair test carried out by a group of Year Five pupils.

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c) From the fair test, state the things need to be

i) changed : __________________________________ ii) measured : __________________________________

iii) kept the same : __________________________________ [3 Marks]

d) Predict the size of shadow formed on the screen if the distance between the object and the torchlight is 10cm.

__________________________________________________________ [1 Mark]

6 A group of pupils carried out an activity using model cars. The bar chart below shows the information they have obtained.

a) What is the aim of the fair test?

__________________________________________________________ [1 Mark]

b) In this fair test,

i) What is changed?

____________________________________________________

ii) What is observed?

____________________________________________________ [2 Marks]

10

20

30

40

50

60

2 4 6 8 10 12

Number of dry cell

Speed/m/s

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c) What is the relationship between the number of dry cells and the speed of cars?

If the number of dry cells ______________________ , the speed of cars __________________

[1 Mark]