Earth's Spheres Quiz

What is the main component of the Earth's hydrosphere?

• Lakes

• Rivers

• Oceans

• Glaciers

Which sphere of the Earth contains all living organisms?

• Atmosphere

• Hydrosphere

• Biosphere

• Geosphere

What is the solid, rocky shell of the planet Earth called?

• Crust

• Mantle

• Core

• Geosphere

Which of the following is NOT a part of the Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon dioxide

• Magma

What percentage of the Earth's surface is covered by water?

• About 50%

• About 71%

• About 65%

• About 80%

Which sphere includes all of the Earth's water, ice, and water vapor?

• Atmosphere

• Hydrosphere

• Biosphere

• Geosphere

What is the primary gas found in the Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which of the following is a part of the biosphere?

• Mountains

• Clouds

• Forests

• Oceans