AIR AND WATER

................... is a mixture of many gases like oxygen,nitrogen,carbon and vapour.

• air

• water

• rain

...................... is the most essential component for our survival.

• oxygen

• carbon

• vapour

................... has the ability to dissolve many substances in itself.

• air

• water

• carbon

The weight of the air above the earth presses on everything.This is called ....................

• air pressure

• water pressure

• pressure

............... is the most abundant liquid found on earth.

• water

• mercury

• gas

Water covers ...................... of the earth's surface.

• 70%

• 50%

• 60%

The property of a substance to be dissolved in other substances is known as .................

• solubility

• flexibility

• luster

........................ is the universal solvent.

• air

• water

• gas

...................... is the only natural substance that exists in all three states.

• water

• air

• space

List out the processes in water cycle

1.precipitation

2.collection

3.condensation

4.evaporation