Earth's spheres

Front

What are the four main spheres of Earth?

Back

The four main spheres of Earth are the biosphere (living things), hydrosphere (water), atmosphere (air), and geosphere (land).

Front

What is the biosphere?

Back

The biosphere is the part of Earth where living organisms exist, including land, water, and the atmosphere.

Front

What is the hydrosphere?

Back

The hydrosphere includes all the water on Earth, such as oceans, rivers, lakes, and water vapor in the atmosphere.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding Earth, essential for life and weather.

Front

What is the geosphere?

Back

The geosphere is the solid part of Earth, including rocks, soil, and landforms.

Front

How do the biosphere and hydrosphere interact?

Back

The biosphere and hydrosphere interact when living organisms use water for survival, such as animals drinking from rivers.

Front

How do the atmosphere and biosphere interact?

Back

The atmosphere and biosphere interact when plants take in carbon dioxide from the air for photosynthesis.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from one location and transported to another, often by water, wind, or ice.

Front

How do the hydrosphere and geosphere interact?

Back

The hydrosphere and geosphere interact when water flows over land, causing erosion and shaping landscapes.

Front

What role does nitrogen play in the atmosphere?

Back

Nitrogen is the most abundant gas in the atmosphere, making up about 78% of it, and is essential for plant growth.