Earth's Spheres

What is the layer of gases that surrounds the Earth called?

• ocean

• atmosphere

• desert

• forest

Which sphere includes all the water on Earth, including water in the oceans, lakes, rivers, and even underground?

• atmosphere

• biosphere

• hydrosphere

• geosphere

In which sphere do living organisms, including humans, plants, and animals, exist?

• Hydrosphere

• Lithosphere

• Atmosphere

• Biosphere

What is the solid part of the Earth called, which includes the rocks, mountains, and soil?

• Stratosphere

• Troposphere

• Lithosphere

• Mantle

What is the most abundant gas in the Earth's atmosphere?

• Helium

• Carbon dioxide

• Nitrogen

• Oxygen

Which sphere is responsible for regulating the Earth's temperature and weather patterns?

• atmosphere

• hydrosphere

• lithosphere

• biosphere

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

• 50%

• 85%

• 71%

• 30%

Which sphere provides the nutrients and resources necessary for life to exist?

• atmosphere

• biosphere

• geosphere

• cryosphere

What is the process of water changing from a liquid to a gas called?

• precipitation

• sublimation

• condensation

• evaporation

What is the layer of soil and rock that makes up the Earth's surface called?

• hydrosphere

• stratosphere

• lithosphere

• atmosphere