Earth and its Atmosphere

What part of the Earth is A?

• outer core

• outer edge

• crust

• mantle

What part of the Earth is B?

• outer core

• inner core

• crust

• mantle

What part of the Earth is C?

• outer core

• inner core

• crust

• mantle

What part of the Earth is D?

• outer core

• inner core

• crust

• mantle

What is the layer of gases that surrounds the Earth called?

• air

• atmosphere

• gravity

• space

78% of the Earth’s atmosphere is made up of which gas?

• carbon dioxide

• nitrogen

• hydrogen

• oxygen

Approximately what percentage of the atmosphere is oxygen?

• 5%

• 21%

• 63%

• 78%

The word ‘abundant’ means what?

• There isn’t much of something

• There is a lot of something

• There is just enough of something

• There is none of something

What percentage of the atmosphere is carbon dioxide?

• 4%

• 0.04%

• 40%

• 14%

The inner core and outer core are solid.

• TRUE

• FALSE