Unit 4 Earth's Major Spheres Video Checkpoint

What is the lithosphere primarily composed of?

• Water and ice

• Gases like nitrogen and oxygen

• Rocks and minerals

• Living organisms

What makes up the hydrosphere?

• Water

• Earth

• Air

• Living Things

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

• Approximately 30%

• Over 70%

• Less than 10%

• Exactly 50%

What makes up the atmosphere?

• Water

• Air

• Earth

• Living Things

Which two gases make up the largest percentage of Earth's atmosphere?

• Carbon dioxide and Argon

• Oxygen and Water vapor

• Nitrogen and Oxygen

• Methane and Ozone

What does the biosphere encompass?

• All the water on Earth

• Earth's solid outer layer

• All living organisms on Earth

• The blanket of gases surrounding Earth