Earth's Systems
Water on Earth
Water Cycle & Conservation
Sphere Interactions
Clouds & Precipitation
100

What are the four main Earth systems?

Geosphere, Hydrosphere, Atmosphere, Biosphere

100

What percentage of Earth is covered in water?

70%

100

What happens when water vapor cools and turns into liquid?

Condensation

100

A bird flying through the air is an interaction between which two spheres?

Biosphere & Atmosphere

100

What are clouds made of?

Water droplets and tiny particles

200

Hydrosphere

Which system includes all of Earth’s water?

200

Most of Earth's water is what type?

What percentage of Earth is covered in water?

200

What process turns liquid water into vapor?

Evaporation

200

A plant growing in soil is an interaction between which two spheres?

Biosphere & Geosphere

200

What causes rain to fall from clouds?

Water droplets become too heavy

300

Geosphere

Which system contains rocks, soil, and landforms?

300

What is the term for water found in glaciers, rivers, and lakes?

Freshwater

300

What is one way people can conserve water at home?

Turning off the faucet when brushing teeth

Other answers accepted

300

What two spheres interact when rain falls into a lake?

Atmosphere & Hydrosphere

300

What is the rain shadow effect?

Mountains block rain from reaching valleys

400

Biosphere

Which system includes all living things?

400

How much of Earth’s water is available for plants and animals?

Less than 1%

400

What do desalination plants do?

Remove salt from seawater

400

What two spheres interact when a horse drinks from a pond?

Biosphere & Hydrosphere

400

What happens to hot water vapor when it touches a cold surface?

It condenses into liquid

500

Atmosphere

Which system consists of gases surrounding Earth?

500

What is one reason desalination is not widely used?

It is expensive to operate

500

Why is dirty water unsafe to drink?

It may contain harmful bacteria

500

What two spheres interact during a sandstorm?

Geosphere & Atmosphere

500

What do you need for cloud formation in the atmosphere?

Water vapor, cooling, and condensation

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