6th Grade - Earth's structure

Which of the following is the outermost layer of gases surrounding Earth?

• Hydrosphere
• Geosphere
• Atmosphere
• Biosphere
• 900

What is the main component of the hydrosphere?

• Rocks
• Ice
• Gases
• Water
• 900

Which Earth system includes all living things?

• Atmosphere
• Biosphere
• Cryosphere
• Geosphere
• 900

What is the primary gas found in the atmosphere?

• Carbon dioxide
• Oxygen
• Nitrogen
• Hydrogen
• 900

Which Earth system is the largest?

• Hydrosphere
• Cryosphere
• Geosphere
• Biosphere
• 900

What is the cryosphere primarily composed of?

• Liquid water
• Rocks
• Ice
• Gases
• 900

How thick is the atmosphere approximately?

• 10 kilometers
• 50 kilometers
• 100 kilometers
• 200 kilometers
• 900

Which of the following is NOT part of the hydrosphere?

• Oceans
• Rivers
• Glaciers
• Underground water
• 900

What force is responsible for pulling objects together due to their masses?

• Magnetism
• Gravity
• Friction
• Electricity
• 900

What is a nebula?

• A solid rock
• A cloud of gas, ice, and dust
• A type of planet
• A type of star
• 900