Earth's spheres

Front

What are the four main spheres of Earth?

Back

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

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists, including land, water, and the atmosphere.

Front

What is the geosphere?

Back

The geosphere refers to the solid parts of the Earth, including rocks, soil, and landforms.

Front

What is the hydrosphere?

Back

The hydrosphere encompasses all water on Earth, including oceans, rivers, lakes, and groundwater.

Front

What is the atmosphere?

Back

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

Front

How do the biosphere and geosphere interact?

Back

Plants grow in the soil (geosphere) and are part of the biosphere, demonstrating their interaction.

Front

How do the hydrosphere and geosphere interact?

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Water in rivers (hydrosphere) can erode landforms (geosphere), showing their interaction.

Front

How do the atmosphere and biosphere interact?

Back

Wind (atmosphere) can spread seeds from trees (biosphere), illustrating their interaction.

Front

How do the hydrosphere and atmosphere interact?

Back

Clouds (atmosphere) are formed from water vapor (hydrosphere), showing their interaction.

Front

What gas makes up the majority of Earth's atmosphere?

Back

Nitrogen makes up about 78% of Earth's atmosphere.