Earth's Freshwater and the Water Cycle Post Assessment

What is the process called when water vapor cools and changes back into liquid droplets, forming clouds?

• Evaporation

• Condensation

• Precipitation

• Infiltration

Why is freshwater important for humans?

• It is used for transportation.

• It is essential for drinking, agriculture, and sanitation.

• It is the primary habitat for marine life.

• It is used in the cooling systems of power plants.

What is a renewable source of freshwater?

• Fossil fuels

• Groundwater

• Rainwater

• Oceans

How does pollution affect freshwater sources?

• It increases the water's boiling point.

• It makes the water more acidic.

• It introduces harmful substances that can harm life forms and disrupt ecosystems.

• It increases the water's transparency.

What is groundwater?

• Water that is stored in the atmosphere.

• Water that flows in rivers and streams.

• Water that is trapped in the soil and rocks beneath the Earth's surface.

• Water that is frozen in glaciers.

What is an aquifer?

• A machine used for water purification.

• A body of permeable rock that can contain or transmit groundwater.

• A man-made reservoir.

• A type of water filter.

During which process does water change from a liquid to a gas?

• Condensation

• Precipitation

• Evaporation

• Infiltration

Why is it important to conserve freshwater?

• To ensure there is enough water for future generations.

• To make the water cycle faster.

• To increase the amount of saltwater.

• To reduce the amount of sunlight reaching Earth.

What happens during the infiltration stage of the water cycle?

• Water evaporates from the surface of the ocean.

• Water vapor condenses to form clouds.

• Water soaks into the ground to become groundwater.

• Water is consumed by animals.

Why are aquifers important to humans?

• They are a major source of oil.

• They contain large reserves of freshwater.

• They are the primary source of salt for the ocean.

• They regulate the temperature of the Earth's surface.