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Question (1)

QN00351

The continuous circulation of water between the Earth’s surface and atmosphere is called —

(A) condensation
(B) evaporation
(C) water cycle
(D) precipitation

Correct Answer: C

Explanation:

Water continuously moves through evaporation, condensation and rainfall.

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Question (2)

QN00352

Which process changes liquid water into water vapour?

(A) Condensation
(B) Evaporation
(C) Freezing
(D) Melting

Correct Answer: B

Explanation:

Evaporation changes liquid water into vapour.

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Question (3)

QN00353

Water vapour changes into tiny water droplets during —

(A) evaporation
(B) boiling
(C) condensation
(D) melting

Correct Answer: C

Explanation:

Condensation converts vapour into liquid droplets.

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Question (4)

QN00354

Clouds are formed mainly due to —

(A) freezing
(B) evaporation
(C) condensation of water vapour
(D) melting of ice

Correct Answer: C

Explanation:

Clouds form when water vapour condenses.

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Question (5)

QN00355

Which of the following is the main source of energy for the water cycle?

(A) Moon
(B) Wind
(C) Sun
(D) Soil

Correct Answer: C

Explanation:

The Sun provides heat energy for evaporation.

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Question (6)

QN00356

Rainfall occurs when water droplets in clouds become —

(A) lighter
(B) warmer
(C) heavier
(D) colourless

Correct Answer: C

Explanation:

Heavy droplets fall as rain.

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Question (7)

QN00357

Which process in the water cycle adds water vapour to the atmosphere?

(A) Condensation
(B) Evaporation
(C) Freezing
(D) Collection

Correct Answer: B

Explanation:

Evaporation releases water vapour into air.

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Question (8)

QN00358

The cooling of water vapour to form liquid water is called —

(A) boiling
(B) freezing
(C) condensation
(D) sublimation

Correct Answer: C

Explanation:

Condensation changes vapour into liquid.

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Question (9)

QN00359

Which of the following is an example of evaporation?

(A) Formation of dew
(B) Drying of wet clothes
(C) Freezing of water
(D) Formation of frost

Correct Answer: B

Explanation:

Water changes into vapour while clothes dry.

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Question (10)

QN00360

Why do wet clothes dry faster on a sunny day?

(A) Condensation increases
(B) Evaporation occurs faster
(C) Water freezes quickly
(D) Clouds absorb water

Correct Answer: B

Explanation:

Heat from sunlight increases evaporation.

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Question (1)

The continuous circulation of water between the Earth’s surface and atmosphere is called —

Explanation:

Link:

Question (2)

Which process changes liquid water into water vapour?

Explanation:

Link:

Question (3)

Water vapour changes into tiny water droplets during —

Explanation:

Link:

Question (4)

Clouds are formed mainly due to —

Explanation:

Link:

Question (5)

Which of the following is the main source of energy for the water cycle?

Explanation:

Link:

Question (6)

Rainfall occurs when water droplets in clouds become —

Explanation:

Link:

Question (7)

Which process in the water cycle adds water vapour to the atmosphere?

Explanation:

Link:

Question (8)

The cooling of water vapour to form liquid water is called —

Explanation:

Link:

Question (9)

Which of the following is an example of evaporation?

Explanation:

Link:

Question (10)

Why do wet clothes dry faster on a sunny day?

Explanation:

Link:

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