Science Unit 3: Water Sources

How much of Earth's water is salt water?

• 75%
• 91%
• 97%
• 95%

What is the definition of freshwater?

• Water that contains low concentrations of salt
• A large body of water that is still and surrounded by land
• Areas where standing water covers the soil
• The entire body of water that covers up 71% of Earth

How much of Earth's surface is covered in water?

• 97%
• 85%
• 71%
• 68%

The large amount of water on Earth is not safe for drinking.

• True
• False

In order to be classified as fresh water, there needs to be less than ____ of salt concentration

• 0.1%
• 2%
• 1%
• 0.5%

There is no salt in lakes

• True
• False

Scientists are trying to find ways to turn ocean water into drinking water. Scientists call this process __________.

• Hydroplane
• Desalination
• Hydroxyzine
• Aquifer

Which is NOT an example of freshwater?

• Lakes
• Ice
• Groundwater
• Ocean

A ______ a body of rock that can hold water underground and that allows water to flow through it.

• Aquifer
• Desalination
• Hydroxyzine
• Hydroplane

Water is NOT in the atmosphere

• True
• False