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Question (1)

QN004862

How do clouds form in the atmosphere according to the chapter?

(A) Water freezes directly into ice cubes
(B) Water vapour condenses into tiny droplets around dust particles
(C) Rivers flow into the sky
(D) Oceans throw water upward

Correct Answer: B

Explanation:

Clouds form when water vapour condenses into tiny droplets around dust particles.

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Question (2)

QN004863

The tiny droplets that form clouds are generally formed around:

(A) Leaves
(B) Sand grains on land
(C) Dust particles
(D) Stones

Correct Answer: C

Explanation:

Dust particles act as centres for condensation.

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Question (3)

QN004864

What happens when air rises higher above the Earth's surface?

(A) It becomes hotter
(B) It remains unchanged
(C) It becomes cooler
(D) It becomes solid

Correct Answer: C

Explanation:

Air cools as it rises higher in the atmosphere.

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Question (4)

QN004865

The process responsible for cloud formation is:

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

Correct Answer: C

Explanation:

Cloud formation occurs through condensation.

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Question (5)

QN004866

Which statement best defines condensation?

(A) Conversion of water into ice
(B) Conversion of water vapour into liquid water
(C) Conversion of ice into water
(D) Conversion of liquid water into vapour

Correct Answer: B

Explanation:

Condensation is the conversion of water vapour into liquid water.

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Question (6)

QN004867

Rain occurs when cloud droplets:

(A) Become lighter
(B) Evaporate again
(C) Become heavy enough to fall
(D) Freeze completely

Correct Answer: C

Explanation:

Heavy droplets fall as rain.

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Question (7)

QN004868

Which form of water rises into the atmosphere to help form clouds?

(A) Ice
(B) Water vapour
(C) Snow
(D) Dew

Correct Answer: B

Explanation:

Water vapour rises into the atmosphere.

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Question (8)

QN004869

Why does water vapour rise in the atmosphere?

(A) It is heavier than air
(B) It is pushed by clouds
(C) It is lighter than air
(D) It is attracted by the Sun

Correct Answer: C

Explanation:

Water vapour is lighter than air.

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Question (9)

QN004870

Under special conditions, water from clouds may fall as:

(A) Oil and milk
(B) Hail or snow
(C) Steam only
(D) Fog only

Correct Answer: B

Explanation:

Water may fall as hail or snow under special conditions.

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Question (10)

QN004871

In the cloud-formation process, water vapour first changes into:

(A) Large raindrops
(B) Ice cubes
(C) Tiny water droplets
(D) Groundwater

Correct Answer: C

Explanation:

Water vapour condenses into tiny droplets first.

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Question (1)

How do clouds form in the atmosphere according to the chapter?

Explanation:

Link:

Question (2)

The tiny droplets that form clouds are generally formed around:

Explanation:

Link:

Question (3)

What happens when air rises higher above the Earth's surface?

Explanation:

Link:

Question (4)

The process responsible for cloud formation is:

Explanation:

Link:

Question (5)

Which statement best defines condensation?

Explanation:

Link:

Question (6)

Rain occurs when cloud droplets:

Explanation:

Link:

Question (7)

Which form of water rises into the atmosphere to help form clouds?

Explanation:

Link:

Question (8)

Why does water vapour rise in the atmosphere?

Explanation:

Link:

Question (9)

Under special conditions, water from clouds may fall as:

Explanation:

Link:

Question (10)

In the cloud-formation process, water vapour first changes into:

Explanation:

Link:

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