Water Distribution

Water on Earth is found naturally as a solid, a liquid, and a gas. Where is MOST of the solid water on Earth?

• Deep in Earth's mantle

• In Earth's polar regions

• In the outer atmosphere

• At the bottom of the ocean

Only 3% of the water on Earth is freshwater. About 60% of that water is not available for man's use. Why is this?

• It is frozen

• It is polluted

• It is too salty

• It is in aquifers

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Approximately 99.7% of all water on Earth is found in oceans, seas, ice, and the atmosphere. Based on this information, which statement is most accurate?

• The Earth's freshwater supply is infinite.

• Less than 0.3% of Earth's water is drinkable.

• Humans are not dependent on ocean water.

• The water cycle returns all usable water to the sea.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Use the chart to answer question 4.

About 97% is found as evaporated water and 3% is frozen water.

• About 97% is found as fresh water and about 3% is salt water.

• About 97% is found as frozen water and 3% is liquid water.

• About 97% is found as salt water and about 3% is fresh water.

• About 97% is found as evaporated water and 3% is frozen water.

Tags

NGSS.MS-ESS2-4

Approximately what percent of the Earth’s water is salt water?

• 97%

• 71%

• 1%

• 3%

Where is most of the world’s water found? Use the justifications to make your choice.

• Rivers and lakes: The exact depth of the rivers and lakes changes so it is difficult to determine volume.

• Aquifers: underground water, ground deposits: All of the sources of underground water have not been found.

• Oceans: The oceans contain more water by volume than any other source

• Polar ice: The amount of ice below the surface is difficult to determine.

Tags

NGSS.MS-ESS2-4

Which statement about Earth’s water is TRUE?

• The total amount of water on Earth constantly changes.

• The total amount of water on Earth stays the same.

• People can live without water.

• Plants and animals can live without water.

Tags

NGSS.MS-ESS2-4

Where is most of the freshwater found on Earth?

• lakes
• glaciers
• oceans
• rivers

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

Tags

NGSS.MS-ESS2-4

What is groundwater?

• water that fills space between rocks of Earth

• water found within a lake or pond

• water that is evaporated from the surface of Earth

• water that is found in the ocean

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-1