Earth's Water Systems

The water cycle describes the movement of the water of Earth. About 97% of the water of Earth is the salt water found in the oceans while the remaining 3% is fresh water. Where would the majority of the fresh water on Earth be found?

• groundwater and aquifers

• swamps and wetlands

• ice caps and glaciers

• lakes and rivers

Tags

NGSS.MS-ESS2-4

The graph shows the distribution of the freshwater resources of Earth. Based on the date in this graph, which of these sources of fresh water corresponds to Source 1?

• atmospheric water

• surface water

• frozen water

• groundwater

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

A large body of salt water is called a(n)

• estuary
• lake
• ocean
• pond

What percentage of water on Earth is salt water?

• 55
• 71
• 84
• 97

Most of Earth's fresh water is found

• Frozen in glaciers
• Underground
• In the Great Lakes
• In Oceans

Tags

NGSS.MS-ESS2-4

Which represents the distribution of water on Earth?

• 3% freshwater, 97% salt water
• 97% freshwater, 3% salt water
• 71% freshwater, 29% salt water
• 29% freshwater, 71% salt water

Water covers about three-fourths of the earth's surface.

• true

• false

Tags

NGSS.MS-ESS2-4

Ocean and sea are saltwater.

• true

• false

Tags

NGSS.5-ESS2-2

Almost all the water on Earth is freshwater.

• true

• false

Tags

NGSS.MS-ESS2-4

Saltwater from ocean and sea is too salty for people to drink.

• true

• false