Water Quality and Distribution

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

Where is most of the freshwater found on Earth?

• lakes

• glaciers

• oceans

• rivers

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Approximately what percent of Earth's water is salt water?

• 3

• 70

• 79

• 97

What percent of Earth's freshwater is available for humans to use?

• 3

• less than 1

• 97

• 10

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

The diagram shows the distribution of water on the Earth. Which source is the most abundant supply of liquid surface water that is not salty?

• groundwater

• oceans

• lakes

• rivers

Tags

NGSS.MS-ESS2-4

The graphic shows that only 3% of the Earth's water is fresh water. The graphic also shows that of this 3%, almost all of it is contained in two reservoirs. What are the two reservoirs that contain almost all of Earth's fresh water?

• glaciers and groundwater

• streams and estuaries

• marshes and swamps

• lakes and rivers

Tags

NGSS.MS-ESS2-4

The diagram shows the distribution of water on the Earth. Based on the diagram, which is true?

• Most of Earth's water is fresh water.

• Most of Earth's fresh water is contained in glaciers and ground water.

• Most of Earth's water is contained in glaciers.

• Most of Earth's fresh water is contained in the oceans.

Tags

NGSS.MS-ESS2-4

Most of the Earth's water is in

• salty oceans

• freshwater lakes

• freshwater ponds

• glaciers

Tags

NGSS.MS-ESS2-4

What is the primary source of water pollution in urban areas?

• Industrial waste

• Agricultural runoff

• Household waste

• Natural sources

Which process is primarily responsible for the purification of water in the natural water cycle?

• Evaporation

• Condensation

• Precipitation

• Infiltration

Tags

NGSS.MS-ESS2-4