Spheres of Earth

Front

What does the Greek root 'bio' mean?

Back

life

Front

What does the Greek root 'geo' mean?

Back

ground

Front

What does the Greek root word 'atmos' mean?

Back

air

Front

What gas makes up 78% of Earth's atmosphere?

Back

nitrogen

Front

What is the term for all the water on Earth?

Back

hydrosphere

Front

What is the term for the layer of Earth that includes all living things?

Back

biosphere

Front

What is the term for the solid part of Earth?

Back

geosphere

Front

What is the atmosphere?

Back

The layer of gases surrounding Earth.

Front

What is the hydrosphere?

Back

All the water on Earth, including oceans, rivers, and lakes.

Front

What is the biosphere?

Back

The global sum of all ecosystems, where life exists.