Form 1 ScienceChapter 6

FORM 1 CHAPTER 6 SOURCES OF ENERGY

1. Diagram 1 shows a durian dropping down from a tree

(a) What form of energy does the durian have in each of the following position?

P: ……………………………………………………………..…………………………………….

Q: ……………………………………………………………..…………………………………….

[2 marks](b) As the durian falls to the ground, what form of energy is

(i) increasing

………………………………………………………………………………………………….

[1 mark]

(ii) decreasing

………….……………………………………………………………………………………….

[1 mark]

(c) What is the energy change involved as the durian falls to the ground?

[2 marks]

(d) What form of energy is produced when the durian hits the ground?

………………………………………………………………………………………………………

[1 mark]

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P

Q

Diagram 1

Form 1 ScienceChapter 6

2. Diagram 2 shows three sources of energy.

(a) On Diagram 2, label the types of sources of energy using the following words:

Wind Water Fossil fuels

[3 marks]

(b) Draw lines to match the sources of energy with its description

[3 marks]

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Sources of energy

Fossil fuels

Water

Wind

Description

Energy obtained from air that moves from a cooler place to a warmer place

Energy obtained from decomposing plants and animals

Energy obtained from the remains of plants and animals buried and decomposed in the earth long ago

Energy obtained from flowing water that is stored in a dam

P: …………………………….

Q: …………………………….

R: …………………………….

Diagram 2

Form 1 ScienceChapter 6

(c) State two advantages of using solar energy.

(i)………………………………………………………………………………..………………….

(ii)………………………………………………………………………………............................

[2 marks]

(d) More than half of the sources of energy used today come from fossil fuels. This source of energy is depleting. State two ways that will help to conserve this source of energy.

(i)…………………………………………………………………………………………………….

(ii)………………………………………………………………………………............................

[2 marks]

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Form 1 ScienceChapter 6

3. Diagram 3.1 shows a swinging pendulum.

(a) State the energy change as the pendulum swings from P to Q and then to R.

……………………………………………………………………………………………………...

[1 mark]

(b) At which positions labelled, P, Q, and R does the pendulum have

(i) maximum kinetic energy : …………………………………………………………………

(ii) maximum potential energy: …………………………………………………………………

[2 marks]

(c) Diagram 3.2 shows a toy car. The spring in the toy car is wound up.

(i) What is the form of energy stored in the wound up spring?

……………………………………………………………………………………………………

[1 mark]

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P

Q

R

Diagram 3.1

Diagram 3.2

Form 1 ScienceChapter 6

(ii) What happens to the toy car when it is released on the floor?

……………………………………………………………………………………………………

[1 mark]

(iii) State the energy change in this situation.

……………………………………………………………………………………………………

[1 mark]

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Form 1 ScienceChapter 6

4. Diagram 4 shows some forms of energy.

P: ………………………….. Q: …………………………. R: …………………………

Diagram 4.1

(a) Label P, Q and R on Diagram 4.1 using the following words.

Light energy Chemical energy Potential energy

[3 marks]

(b) A marble is released from position P as shown in Diagram 4.2.

(i) State the form of energy in the marble at position P.

…………………………………………………………………………………………………..

[1 mark]

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S

R

Q

P

Diagram 4.2

Form 1 ScienceChapter 6

(ii) At which position does the marble have the maximum kinetic energy?

…………………………………………………………………………………………………..

[1 mark]

(iii) State the energy change that takes place as the marble moves from P to R and then to S.

………………………………………………………………………………………………….

[1 mark]

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Form 1 ScienceChapter 6

1. Diagram 5 shows sources of energy P, Q, R and S.

Based on your observation in Diagram 5,(a) Name the sources of energy.

P: ……………………………………………………………………………………………………

Q: …………………………………………………………………………………………………..

R: …………………………………………………………………………………………………..

S: …………………………………………………………………………………………………..

[4 marks]

(b) Classify P, Q, R and S in Diagram 5 into two groups based on their common properties. Write the names of the sources of energy belonging to each group.

[4 marks]

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P Q R S

Diagram 5

P, Q, R and S

Common properties

Names of sources of energy