Chapter 18 Review

The atmosphere was formed by

• a direct act of God during the Creation week.

• gases produced by volcanic activity.

• the accumulation of gases as the earth condensed out of the solar nebula.

• the action of green plants over millions of years.

Who was called the “father of chemistry”?

• Karle Scheele

• Daniel Rutherford

• Joseph Priestley

• Antoine Lavoisier

Of those listed, the most significant role for nitrogen in the atmosphere is to

• dilute oxygen to the appropriate level.

• react with and neutralize other noxious gases.

• regulate the temperature.

• serve as fuel for cellular respiration.

The most abundant gas in the homosphere is

• carbon dioxide.

• nitrogen.

• oxygen.

• water vapor.

The largest carbon reservoir in the carbon cycle is found in

• the atmosphere.

• the earth’s plants.

• the oceans.

• the soil.

Which of these helps to convert atmospheric nitrogen to a usable organic form?

• auroras

• dense clouds

• jet streams

• lightning

The gas called ozone is composed of

• helium atoms.

• nitrogen atoms.

• oxygen atoms.

• ozone atoms.

Tags

NGSS.MS-PS1-1

Nearly every year, a thin spot in the ozone layer develops over

• Antarctica.

• the Arctic.

• the Equator.

• the Middle East.

Which atmospheric layer directly affects radio communications on Earth?

• exosphere

• ionosphere

• magnetosphere

• ozone layer

Which of the following layers would be most effective in protecting the earth from a solar flare?

• magnetosphere

• mesosphere

• stratosphere

• troposphere