air and water vapour

What is air made up of?

• Water and carbon IV oxide

• Nitrogen and oxygen only

• Oxygen and water vapor

• Oxygen , nitrogen and carbon IV oxide

The most abundant gas in the air is called ----

• Oxygen

• Nitrogen

• Water vapour

• Carbon IV oxide

The gas in air that support life is what?

• Nitrogen

• Water vapour

• Oxygen

• Noble gases

Water is water vapor?

• Solid water

• Liquid water

• Gas form of water

• Frozen water

How does water vapor formed?

• By cooling water

• By heating water

• By freezing water

• By drying water

What happened to water vapors when it cools down?

• It turns into liquid

• It turns into gas

• ItIt turns into solid

• It disappears

What is the process called when water changes into water vapor?

• Evaporation

• Condensation

• Freezing

• Precipitation

Why is air important for living things?

• It provides food

• It helps with breathing

• It makes rain

• It makes the earth hot

How do clouds formed?

• By heating water

• By drying up water

• By freezing water

• By evaporation of water vapour

Which of the following is not a component of air?

• Oxygen

• Salt

• Nitrogen

• Water vapour