Environmental Science: The Hydrosphere

Where is 97% of the Earth's water located?

• Rivers and Lakes

• Glaciers and Icecaps

• oceans

• groundwater

Why is freshwater important?

• So we can have lakes and Rivers
• There is no such thing as freshwater.
• We need it to survive.

When water goes from being a liquid to a gas (water vapor), that process is called

• Condensation
• Evaporation
• Precipitation
• Transpiration

When water goes from being a gas (water vapor) to a liquid, that process is called 

• Condensation
• Evaporation
• Transpiration
• Precipitation

The scientific name for water in its gas phase

• Precipitation
• Evaporation
• Water Vapor
• Transpiration

About _________ percent of all the water on Earth is in the form of salt water.

• 90

• 97

• 95

• 98

Water that seeps into soil and enters through aquifers is called _____?

• Reservoir

• Standing Water

• Running Water

• Groundwater

How much of the earth's water is freshwater?

• 50 %
• 3 %
• 97 %
• 93 %

Ocean's cover what percent of the Earth's surface?

• 70 %
• 60 %
• 10 %
• none of the above

Which describes an estuary?

• A large body of fresh water.
• A large body of salt water.
• The wide, lower course of a river where fresh and salt water mix.