Fresh/Salt Water

What percentage of Earth's surface is covered with water?

• 71%

• 96.5%

• 10%

• 46%

What percentage of Earth's water is found within the oceans?

• 71%

• 50%

• 96.5%

• 20%

Groundwater is...

• water that exists above Earth's surface

• water that exists underneath Earth's surface

• fresh water

• salt water

Which of the following is part of the hydrosphere? (Check all that apply)

• Glaciers

• Groundwater

• Water vapor in clouds

• Oceans and lakes

• All of the above

True or false: Lakes hold only fresh water.

• True

• False

What percentage of Earth's water is safe for humans and animals to drink?

• 5%

• 10%

• 1%

• 70%

Which ocean is Earth's largest?

• Pacific

• Atlantic

• Indian

• Arctic

An area (like a bay) where a river meets an ocean is called:

• an aquifer

• an estuary

• an ocean

• a glacier

A water-bearing layer of permeable rock, sand, or gravel is called:

• a glacier

• an estuary

• an aquifer

• a river

The majority of Earth's freshwater is trapped in...

• ice

• lakes

• oceans

• swamps