Cloud Formation Quiz

What are clouds made up of?

• Large water droplets

• Millions of tiny water droplets or ice crystals

• Dust particles

• Solid ice blocks

When do clouds form?

• When water vapor evaporates

• When water vapor in the air condenses to form liquid water or ice crystals

• When the sun shines brightly

• When the wind blows strongly

What causes water vapor to condense into a cloud?

• Heating of the air

• Cooling of the air

• Absence of particles in the air

• Strong winds

What is necessary for water vapor to condense into clouds besides cooling?

• Absence of particles in the air

• Presence of particles in the air

• High temperatures

• Strong sunlight

What is an example of particles that help in cloud formation?

• Water droplets

• Salt crystals, dust from soil, smoke

• Large rocks

• Ice blocks

What is liquid water that condenses from the air on solid surfaces called?

• Frost

• Dew

• Rain

• Snow

What is one condition necessary for water vapor to condense into a cloud?

• Heating of the air.

• Cooling of the air.

• Absence of particles in the air.

• High wind speeds.

What particles in the air can help water vapor condense into clouds?

• Oxygen molecules.

• Salt crystals, dust from soil, smoke.

• Carbon dioxide.

• Nitrogen gas.

What is ice deposited on a surface that is below freezing called?

• Snow.

• Sleet.

• Frost.

• Hail.

How are clouds classified by their shape?

• Cirrus, Cumulus, Stratus

• Alto, Nimbus, Fog

• Rain, Snow, Hail

• Sunny, Cloudy, Stormy