How much water is on Earth?

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

• 50%

• 80%

• 65%

• 71%

Tags

NGSS.MS-ESS2-4

What is the main component of the salt found in salt water?

• Sodium chloride

• Potassium chloride

• Magnesium sulfate

• Calcium carbonate

What percentage of Earth's water is fresh water?

• 25%

• 10%

• 96.5%

• 3.5%

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Where is most of Earth's fresh water stored?

• In rivers and lakes

• In ice and glaciers

• In the atmosphere

• In underground aquifers

Tags

NGSS.MS-ESS2-4

If all the water on Earth were combined into a single sphere, how wide would it be?

• 860 miles

• 1000 miles

• 750 miles

• 500 miles