Water and Its Importance

What is the most important substance on Earth, according to the documentary?

• Air

• Water

• Soil

• Fire

Where is most of Earth's water found?

• In lakes and rivers

• In glaciers and icebergs

• In underground aquifers

• In the atmosphere

What is the process by which water changes from a liquid to a gas?

• Evaporation

• Condensation

• Precipitation

• Freezing

What is the process by which water vapor in the air cools and forms clouds?

• Evaporation

• Condensation

• Precipitation

• Freezing

What is the process by which water falls from the sky as rain, snow, or hail?

• Evaporation

• Condensation

• Precipitation

• Freezing

What is the movement of water from Earth's surface to the atmosphere and back again?

• Water cycle

• Water flow

• Water pressure

• Water temperature

What is the layer of the atmosphere where most of Earth's water vapor is found?

• Troposphere

• Stratosphere

• Mesosphere

What is the name of the saltwater ocean that covers most of Earth's surface?

• Pacific Ocean

• Atlantic Ocean

• Indian Ocean

• Arctic Ocean

What is the process of salt being removed from seawater to make freshwater?

• Desalination

• Filtration

• Distillation

• Chlorination

Why is water important for all living things?

• It is essential for all cellular functions.

• It helps to regulate body temperature.

• It is needed for transporting nutrients and waste products.

• All of the above