Water Resources and Usage Concepts

The video tutorial covers the distribution of Earth's water, highlighting that 97% is saltwater and only 0.6% is liquid freshwater. It explains the sources of freshwater, including running water, standing water, and groundwater. The tutorial also discusses the uses of water in the U.S., such as in thermoelectric power, irrigation, and household activities.

What is the main focus of the lesson introduced in the video?

• The importance of saltwater

• Air and water resources

• The solar system

• The history of Earth

What percentage of Earth's water is saltwater?

• 50%

• 97%

• 2.3%

• 70%

What percentage of Earth's water is liquid fresh water?

• 97%

• 70%

• 0.6%

• 2.3%

Which of the following is NOT a source of fresh water?

• Groundwater

• Lakes

• Rivers

• Oceans

What is the purpose of a reservoir?

• To evaporate water

• To desalinate water

• To store water

• To generate electricity

What is an aquifer?

• A type of plant

• A layer of rock or soil that absorbs water

• A type of fish

• A weather phenomenon

How can groundwater be accessed?

• By evaporating it

• Through drilling or digging

• By building a dam

• Through desalination

What is the largest category of water use in the United States?

• Household use

• Irrigation

• Swimming pools

• Thermoelectric power

Which of the following is a use of water in households?

• Watering lawns and gardens

• Filling reservoirs

• Cooling power plants

• Generating electricity

What is the role of water in thermoelectric power stations?

• To generate steam

• To cool equipment

• To fuel turbines

• To clean machinery