The Hydrosphere

How much water is on the earth?

• 1.3 million km³

• 1.3 billion km³

• 1.3 trillion km³

• 1.3. quadrillion km³

The amount of water in the hydrosphere can change.

• true

• false

What percentage of water is stored in the oceans?

• 79%

• 86%

• 97%

• 78%

Dissolved ________________ makes water salty.

What percentage of freshwater is in the cryosphere?

• 79%

• 97%

• 87%

• 78%

What is true of ground water?

• it is found on the surface

• we use wells to get it

• it collects in layers

• 30% of fresh water is found underground

Where do most countries get their freshwater from?

• rivers

• lakes

• oceans

• groundwater

Where does the UAE get most of our drinking water from?

• rivers

• lakes

• oceans

• groundwater