Earth's Spheres

Front

What are the four main spheres of Earth?

Back

Biosphere, Hydrosphere, Geosphere, Atmosphere.

Front

What does the term 'biosphere' refer to?

Back

The biosphere is the part of Earth where life exists, including land, water, and the atmosphere.

Front

What does the word part 'BIO' mean?

Back

Life.

Front

What sphere includes all the water on Earth?

Back

Hydrosphere.

Front

What sphere includes the solid Earth, such as rocks and soil?

Back

Geosphere.

Front

What sphere includes the gases surrounding Earth?

Back

Atmosphere.

Front

What sphere includes frozen dirt or permafrost?

Back

Cryosphere.

Front

What is the main component of the atmosphere?

Back

Nitrogen (about 78%) and Oxygen (about 21%).

Front

What is the significance of the hydrosphere?

Back

It is essential for all forms of life and influences weather and climate.

Front

How does the geosphere interact with the biosphere?

Back

The geosphere provides nutrients and habitat for organisms in the biosphere.