We live in the __________________layer, a level of the atmosphere.

• Troposphere
• Stratosphere
• Mesosphere
• Exosphere

What absorbs ultraviolet rays in the atmosphere?

• troposphere
• stratosphere
• ozone layer
• greenhouse gases

The coldest layer.

• troposphere
• thermosphere
• exosphere
• mesosphere

The hottest layer.

• troposphere
• thermosphere
• exosphere
• mesosphere

What are the two most common gases in the atmosphere?

• Nitrogen and oxygen

• Oxygen and carbon dioxide

• Carbon Dioxide and methane

• Nitrogen and carbon dioxide

What does the earth's atmosphere do?

• help to regulate the temperature on Earth
• Help UV rays to reach the Earth's surface
• Creates meteors in the sky
• Keep ocean waters cold

What happens to the air pressure the higher up in space you go?

• the air pressure increases
• the air pressure decreases
• the air pressure stays the same
• there is no air pressure

Which statement is true?

• The troposphere has the highest temperature because of the distance from the Sun
• The troposphere has the highest pressure because gravity keeps the air down.
• The exosphere has the highest temperature because of the distance from the Sun
• The exosphere has the highest pressure because gravity keeps the air down.

What is the function of the ozone layer?

• to allow UV rays to get to Earth
• to block UV rays from getting to Earth
• To keep oxygen in
• to allow meteors to get to Earth

Which of these layers is farthest from Earth?

• thermosphere
• stratosphere
• mesosphere
• exosphere