Clouds form when water vapor in the air cools and condenses into water droplets or ice crystals, gathering tiny particles like dust. This process typically occurs when warm air rises, cools, and loses its capacity to hold moisture.

MCQs

1. What happens to water vapor as it rises higher in the atmosphere?

A) It gets warmer
B) It turns into snow
C) It cools and condenses into water droplets
D) It disappears

Answer: C) It cools and condenses into water droplets

Explanation: As water vapor rises, it cools down and condenses into tiny water droplets around dust particles, forming clouds.

 

2 What do clouds need to form besides water vapor?

A) Leaves
B) Sunlight
C) Dust particles
D) Birds

Answer: C) Dust particles

Explanation: Clouds need small particles like dust to provide a surface for water vapor to condense upon and form water droplets.

 

3. Which type of cloud is typically thin and wispy?

A) Cumulus
B) Stratus
C) Cirrus
D) Nimbus

Answer: C) Cirrus

Explanation: Cirrus clouds are high-level clouds that are thin and wispy, often indicating fair weather.

 

4. What is the process called when water vapor turns directly into ice crystals, forming clouds?

A) Melting
B) Freezing
C) Sublimation
D) Condensation

Answer: C) Sublimation

Explanation: Sublimation is the process where water vapor turns directly into ice crystals without becoming liquid first, which can occur in the formation of some clouds.

 

5. Which cloud type is known for indicating stormy weather?

A) Cirrus
B) Cumulonimbus
C) Cumulus
D) Stratus

Answer: B) Cumulonimbus

Explanation: Cumulonimbus clouds are large, towering clouds associated with thunderstorms and severe weather conditions.

 

Fill in The Blanks

Choose from The Words: cools, clouds, cools.

1. Clouds form when water vapor in the air ____ and condenses into tiny water droplets or ice crystals.

Answer: cools

 

2. Water droplets or ice crystals then come together to form ____.

Answer: clouds

 

3. Clouds can also form when warm air rises and ____ as it reaches higher altitudes.

Answer: cools

 

True / False

1. Clouds are made up of water droplets or ice crystals (True / False)

True: Clouds are made up of tiny water droplets or ice crystals that have condensed in the air.

 

2. Clouds form when the air gets warmer (True / False)

False: Clouds form when the air cools and the water vapor condenses.

 

3. Clouds are always white (True / False)

False: Clouds can appear in different colors depending on the angle of the sun and the particles in the atmosphere.

 

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