Earth's Atmosphere - Unit Test REVIEW

Front

78% of the Earth's atmosphere is ___________ and 21% of the Earth's atmosphere is _____________.

Back

Nitrogen, Oxygen

Front

In what layer of the atmosphere do all weather events occur?

Back

Troposphere

Front

In the troposphere, the temperature _____ as altitude increases.

Back

Decreases

Front

The ozone layer is a sublayer of the ________ layer.

Back

Stratosphere

Front

Why is the ozone layer vital to life on Earth?

Back

It shields the Earth from ultraviolet (UV) rays from the sun

Front

Order the layers of the atmosphere starting from the closest to Earth's surface.

Back

Troposphere, Stratosphere, Mesosphere, Thermosphere

Front

What chemical is responsible for breaking up the ozone?

Back

CFCs

Front

Warm air _________ and cool air ___________.

Back

rises/sinks

Front

Heat transfer using the movement of fluids or gases is called ________.

Back

convection

Front

Why does convection take place?

Back

Cold air is more dense than warm air.