Atmosphere

This gas makes up 78% of the atmosphere

• carbon dioxide

• nitrogen

What is the Atmosphere?

• Large water body

• A blanket of gases that surround the earth

Explain how does the ozone layer helps life on Earth?

• Produces oxygen for atmosphere.

• Protects Earth from meteors.

• Absorbs damaging radiation from the sun.

• Reflects most of the sun's radiation to keep Earth cool.

What happens to the air pressure around a person, when they climb a mountain?

• increase

• decrease

• stays the same

• decrease and then increase

Identify the layer of atmosphere that is an extension from thermosphere.

• troposphere

• mesosphere

• exosphere

• ionosphere

Refer to the diagram to the right, which layer should contain the weather system?

• exosphere

• troposphere

• mesosphere

• stratosphere