Quiz on Earth's Four Major Spheres

What is the layer of gases surrounding the Earth called?

• Lithosphere

• Biosphere

• Hydrosphere

• Atmosphere

Which gas makes up the largest percentage of the atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Argon

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

• 80%

• 50%

• 90%

• 71%

Which layer of the Earth is composed of solid rocks and minerals?

• Lithosphere

• Hydrosphere

• Atmosphere

• Biosphere

What is the primary role of the hydrosphere?

• Supports tectonic processes

• Contains all the water on Earth

• Regulates temperature and climate

• Provides habitats for organisms

Which sphere includes all living organisms on Earth?

• Biosphere

• Lithosphere

• Atmosphere

• Hydrosphere

What is the main component of the lithosphere?

• Gases

• Water

• Solid rock

• Living organisms

Which process is essential for plants to grow in the biosphere?

• Condensation

• Photosynthesis

• Evaporation

• Erosion

What is the significance of the atmosphere?

• It regulates Earth's temperature

• It provides minerals for soil

• It supports tectonic activity

• It contains all Earth's water

Which layer of the Earth is involved in plate tectonics?

• Hydrosphere

• Lithosphere

• Biosphere

• Atmosphere