ch. 6 . L1 science lesson's

Front

What is the primary component of Earth's atmosphere?

Back

Nitrogen is the primary component, making up about 78% of the atmosphere.

Front

Which layer of the atmosphere contains the ozone layer?

Back

The ozone layer is located in the stratosphere.

Front

Which atmospheric layer is closest to Earth?

Back

The troposphere is the layer closest to Earth's surface.

Front

In which layers does temperature decrease with increasing altitude?

Back

Temperature decreases with increasing altitude in the troposphere and mesosphere.

Front

What happens to the density of air when more gas molecules are added to a given volume?

Back

The density of the air increases when more gas molecules are added.

Front

What is the function of the ozone layer?

Back

The ozone layer protects living organisms by absorbing most of the sun's harmful ultraviolet radiation.

Front

What is the troposphere?

Back

The troposphere is the lowest layer of Earth's atmosphere where weather occurs and where we live.

Front

What is the stratosphere?

Back

The stratosphere is the second layer of the atmosphere, above the troposphere, and contains the ozone layer.

Front

What is atmospheric pressure?

Back

Atmospheric pressure is the force exerted by the weight of air above a given point.

Front

How does altitude affect air pressure?

Back

As altitude increases, air pressure decreases because there is less air above that point.