Front

This gas makes up 21% of the atmosphere: ozone, oxygen, nitrogen, water vapor

Back

oxygen

Front

What protects us from the harmful UV rays of the sun?

Back

Ozone Layer

Front

Where do satellites orbit? Options: troposphere, thermosphere, exosphere, mesosphere

Back

exosphere

Front

As you go higher in the troposphere, the temperature _______________.

Back

decreases

Front

We live in the __________________layer, a level of the atmosphere. Options: Troposphere, Stratosphere, Mesosphere, Exosphere

Back

Troposphere

Front

What absorbs ultraviolet rays in the atmosphere? Options: troposphere, stratosphere, ozone layer, greenhouse gases

Back

ozone layer

Front

What are the two most common gases in the atmosphere?

Back

Nitrogen and oxygen

Front

What is the function of the ozone layer?

Back

to block UV rays from getting to Earth

Front

Which of these layers is farthest from Earth? Options: thermosphere, stratosphere, mesosphere, exosphere

Back

exosphere

Front

What is the greenhouse effect?

Back

The warming of a planet due to trapped radiation.