What percent of the earth's water is salty?

• 97%

• 3%

• 70%

• 30%

What percent of the earth is covered in water?

• 97%

• 3%

• 70%

• 30%

What percent of the earths water is fresh?

• 97%

• 3%

• 70%

• 30%

Where is most of the earth's freshwater?

• lakes

• rivers

• groundwater

• glaciers

The water cycle is important because...

• ...it adds water to the earth by melting glaciers

• ...it recycles the world's water

• ...it makes the ocean salty

• ...it brings water to the moon

The chemical formula of water?

• 02H

• HO2

• H20

• OH2

Water has a positive and a negative end, this makes it...

• ...a non-polar molecule

• ...a polar molecule

• ...a magnet

• ...a conductor of electricity

Water dissolves the most substances, making it the...

• ...the universal solute

• ...the universal solution

• ...the universal solvent

• ...the universal salty water

Water on earth exists as...

• only liquid

• only liquid and solid

• only solid and gas

• a liquid, solid and gas

Water has a high specific heat, which means...

• ...it takes a long time to heat up and a long time to cool down

• ...it takes a short time to heat up and to short time cool down

• ...it takes a long time to heat up and short time to cool down

• ...it takes a short time to heat up and a long time to cool down