Earth's Major Systems Quiz

What is the atmosphere?

• The solid part of the Earth

• The layer of gases surrounding Earth

• All the water on Earth

• All living organisms

Which system includes rocks and soil?

• Atmosphere

• Hydrosphere

• Geosphere

• Biosphere

What does the hydrosphere encompass?

• Only oceans

• All living organisms

• All water on Earth

• The layer of gases

Which of the following is part of the biosphere?

• Mountains

• Clouds

• Trees

• Rivers

What process involves water turning into vapor?

• Condensation

• Precipitation

• Evaporation

• Infiltration

What is condensation?

• Water falling to Earth

• Water vapor forming droplets

• Water soaking into the soil

• Water moving over the ground

What happens during precipitation?

• Water evaporates

• Water vapor cools

• Water falls to Earth

• Water is absorbed by plants

What is runoff?

• Water soaking into the soil

• Water moving over the ground

• Water turning into vapor

• Water forming clouds

What is nitrogen fixation?

• Conversion of nitrates into ammonia

• Conversion of atmospheric nitrogen into usable forms

• Process of plants using nitrogen

• Breakdown of dead organisms

Why is nitrogen important for plants?

• It helps them grow and is a key component of proteins

• It provides energy

• It helps them absorb water

• It protects them from predators