Unit 3 "Earth's Water Systems"

Where does the water go when water evaporates from a puddle on the street?

• It sinks into the street.

• It goes into outer space.

• It rises into the atmosphere.

• It goes into a nearby river or stream.

About 97 percent of all the water on Earth is in the form of __________________.

• Salt Water

• Fresh Water

Which best explains why it is important for humans to conserve freshwater?

• Once we use up all of Earth’s freshwater, it will never be recycled.

• Earth's water supply is growing.

• Earth’s water supply is shrinking.

• Only a small percentage of Earth’s water is freshwater.

Which are sources of freshwater. Select all that apply.

• Rivers

• Aquifers

• Reservoirs

• Lakes

• Swamps

________________ water can harm living things.

• Clean

• Fresh

• Polluted

• Salt

All water on Earth is recycled through _____.

• the water cycle

• pockets of nitrogen

• exhaled gases

• dead organic material

The shape of different landforms is often changed by _____________ water.

• standing

• stagnant

• flowing

• salt

Which of the following can happen when water interacts with rock formations? Select all that apply

• climate change

• rain falls

• high tide occurs

• a canyon forms

• erosions occurs

What is 1 of the 3 R's of conservation? (Only list one)

All of Earth’s liquid and frozen water make up the _____________,

• Atmosphere

• Biosphere

• Geosphere

• Hydrosphere