Year 8 Science - Rocks - Revision

How many layers does the Earth have?

• 1

• 2

• 3

• 4

The deepest layer is called the ...

• Crust

• Mantle

• Outer core

• Inner core

The uppermost layer is called the ...

• Crust

• Mantle

• Outer core

• Inner core

The hottest layer is the ...

• Crust

• Mantle

• Outer core

• Inner core

This layer is mostly made up of iron.

• Crust

• Mantle

• Outer core

• Inner core

The temperature in the layer is around 4000 degrees Celsius.

• Crust

• Mantle

• Outer core

• Inner core

This layer is responsible for the Earth's magnetic field which is caused by liquid metal.

• Crust

• Mantle

• Outer core

• Inner core

How old is Earth?

• 6000 years

• 2 million years

• 4.5 billion years

• It has always existed

This layer makes up 84% of the Earth's volume.

• Crust

• Mantle

• Outer core

• Inner core

This layer is made up of molten rock.

• Crust

• Mantle

• Outer core

• Inner core