CLASS 3

Moving air is called ______________.

Air shows all the properties of a______.

• solid

• liquid

• gas

The process of conversion of a gas to liquid is called______.

• evaporation

• condensation

• freezing

Plants take in______.

• carbon dioxide

• oxygen

• nitrogen

How much of the earth’s surface is covered with water?

• One-fourth

• Two-third

• Three-fourth

Out of evaporation and boiling, which one is a faster process?

• Evaporation

• Boiling

• Both are slow processes

Give one word answer for the following.

A mixture of gases that is present all around us ___________

The form of water present in air ____________.

The process of fast conversion of a liquid into gas ____________.

The process of continuous circulation of water between the sky and the earth ____________.