Our Planet Earth

Label the diagram.

a

b

c

d

biosphere

hydrosphere

geosphere

atmosphere

Gases flow and swirl in the (a)   causing ​ (b)   ​

• troposphere
• weather.
• thermosphere

The ________ is the solid part of the Earth, made up of rocks, mountains, and landforms. Select the correct answer.

• biosphere

• hydropshere

• geosphere

The ___________ is the air that surrounds our planet, which is made up of different gases.

• geosphere

• biosphere

• atmosphere

The ________ is the community of living things on Earth, including plants, animals, and people.

• hydrosphere

• biosphere

• geosphere

The ________ is all the water on Earth, including oceans, rivers, and lakes. It also includes frozen water, such as glaciers.

• hydrosphere

• atmosphere

• biosphere

The ​ (a)   provides habitats for many living things, which are part of the ​ (b)   _.

• hydrosphere
• biosphere
• geosphere

What are the 3 main layers of the geosphere?

• crust layer

• mantle layer

• core layer

• rock layer

• sedimentary layer

Which of the following best describes the air? Select three.

• mostly nitrogen

• little nitrogen

• some oxygen

• trace gases

• mostly nitrogen

True or false: The ocean contains the majority of the water on Earth.

• True

• False