Science Unit 4

The air around the Earth is called

• the atmosphere

• the surface

• the space

We can help make the air cleaner by

• driving less, riding a bike and walking

• driving cars, flying on airplanes

• building fossil fuel power stations

地核

• mantle

• core

• crust

地壳

• core

• mantle

• crust

地幔

• core

• mantle

• crust

The surface of the earth is covered in rocky ____. We live on it.

• crust

• mantle

• core

Magma is liquid rock in the ______

• core

• crust

• mantle

Write the parts of the earth: crust, mantle, core

What are the three layers under the Earth's surface?

What is something you don't understand from this unit?