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Question (1)

QN0011273

Which of the following best defines energy?

(A) A type of machine
(B) is correct because energy is what makes things move, light up, produce sound, do work and change temperature.
(C) A form of matter
(D) A kind of fuel only

Correct Answer: B

Explanation:

Option (b) is correct because energy is what makes things move, light up, produce sound, do work and change temperature.

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Question (2)

QN0011274

Which activity in a kitchen shows energy being used?

(A) A closed empty box lying on a shelf
(B) is correct because cooking food requires heat energy.
(C) An unused plate on a table
(D) A spoon kept in a drawer

Correct Answer: B

Explanation:

Option (b) is correct because cooking food requires heat energy.

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Question (3)

QN0011275

Which of the following is NOT mentioned as an effect of energy?

(A) Making things move
(B) Producing sound
(C) Changing temperature
(D) is correct because the chapter does not mention automatic colour change as an effect of energy.

Correct Answer: D

Explanation:

Option (d) is correct because the chapter does not mention automatic colour change as an effect of energy.

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Question (4)

QN0011276

A child notices a fan rotating, a bulb glowing and a bell ringing. What common factor makes all these happen?

(A) Water
(B) Air
(C) is correct because energy makes things move, light up and produce sound.
(D) Soil

Correct Answer: C

Explanation:

Option (c) is correct because energy makes things move, light up and produce sound.

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Question (5)

QN0011277

Which example shows energy causing movement?

(A) A glowing bulb
(B) A ringing bell
(C) is correct because movement is one of the effects of energy.
(D) A warm cup of tea

Correct Answer: C

Explanation:

Option (c) is correct because movement is one of the effects of energy.

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Question (6)

QN0011278

When air rushes out of a released balloon, the balloon moves forward because

(A) the balloon becomes heavier
(B) is correct because escaping air pushes the balloon forward.
(C) gravity disappears
(D) the balloon changes colour

Correct Answer: B

Explanation:

Option (b) is correct because escaping air pushes the balloon forward.

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Question (7)

QN0011279

In the balloon rocket activity, which change is most likely to make the toy move faster?

(A) Putting less air in the balloon
(B) is correct because more air rushing out provides greater movement.
(C) Using a shorter straw only
(D) Holding the balloon tightly without releasing it

Correct Answer: B

Explanation:

Option (b) is correct because more air rushing out provides greater movement.

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Question (8)

QN0011280

A balloon contains 2 units of air and moves 20 cm. Another balloon contains 4 units of air under similar conditions. Which is likely to move farther?

(A) First balloon
(B) is correct because a balloon with more air can produce more movement.
(C) Both equally
(D) Cannot move at all

Correct Answer: B

Explanation:

Option (b) is correct because a balloon with more air can produce more movement.

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Question (9)

QN0011281

Plucking a rubber band produces sound because the rubber band

(A) melts
(B) is correct because vibrating rubber bands produce sound energy.
(C) breaks
(D) shrinks

Correct Answer: B

Explanation:

Option (b) is correct because vibrating rubber bands produce sound energy.

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Question (10)

QN0011282

Which form of energy is demonstrated by the rubber band guitar activity?

(A) Heat energy
(B) is correct because plucking the bands creates sound energy.
(C) Light energy
(D) Fuel energy

Correct Answer: B

Explanation:

Option (b) is correct because plucking the bands creates sound energy.

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Question (1)

Which of the following best defines energy?

Explanation:

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Question (2)

Which activity in a kitchen shows energy being used?

Explanation:

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Question (3)

Which of the following is NOT mentioned as an effect of energy?

Explanation:

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Question (4)

A child notices a fan rotating, a bulb glowing and a bell ringing. What common factor makes all these happen?

Explanation:

Link:

Question (5)

Which example shows energy causing movement?

Explanation:

Link:

Question (6)

When air rushes out of a released balloon, the balloon moves forward because

Explanation:

Link:

Question (7)

In the balloon rocket activity, which change is most likely to make the toy move faster?

Explanation:

Link:

Question (8)

A balloon contains 2 units of air and moves 20 cm. Another balloon contains 4 units of air under similar conditions. Which is likely to move farther?

Explanation:

Link:

Question (9)

Plucking a rubber band produces sound because the rubber band

Explanation:

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Question (10)

Which form of energy is demonstrated by the rubber band guitar activity?

Explanation:

Link:

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