ch. 6 . L1 science lesson's

Front

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

Back

The density of the air will increase.

Front

What is the primary component of Earth's atmosphere?

Back

Nitrogen.

Front

What is the force exerted by the atmosphere called?

Back

Air pressure.

Front

In which layers of the atmosphere does temperature decrease with increasing altitude?

Back

Troposphere and mesosphere.

Front

Which layer of the atmosphere contains the ozone layer?

Back

Stratosphere.

Front

Define 'air pressure'.

Back

Air pressure is the force exerted by the weight of air molecules above a surface.

Front

What is the role of the ozone layer in the atmosphere?

Back

The ozone layer protects living organisms by absorbing harmful ultraviolet (UV) radiation from the sun.

Front

What is the relationship between altitude and temperature in the troposphere?

Back

In the troposphere, temperature decreases as altitude increases.

Front

What gas is most abundant in the Earth's atmosphere?

Back

Nitrogen, making up about 78% of the atmosphere.

Front

What is the significance of the stratosphere?

Back

The stratosphere contains the ozone layer and is where temperature increases with altitude due to ozone absorption of UV radiation.