Earth Science Chapter 18 Review 2016

Rate of solar energy flow that reaches the earth

Which layer is most effective at protecting the earth from a solar flare?

Nitrogen fixing bacteria make this substance that helps plants grow

The most concentrated form of solar energy at the earth's surface occurs when

The percentage of the sun's energy that makes it to the earth's surface

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

Van Allen belts

Greenhouse gas

A form of thermal radiation

The gas called ozone is composed of

The most abundant gas in the homosphere is

Envelope of gases surrounding the earth

Indirect warming of the atmosphere

The steady temperature change associated with altitude change

Excessive exposure to UV rays can cause which of the following in humans?

Which of these would not be affected by variations of oxygen levels in the atmosphere?

Planes fly here to avoid storms and use the jet streams

Layer with the coldest temperatures

What gas do old earth scientists say was first on earth?

Which atmospheric layer directly affects radio communications on earth?

The density currents that cause a mixing of air are an example of

In what temperature layer do most people live?

Fast winds in the stratosphere

The atmosphere was formed by

Which atmospheric layer has wind?

The largest carbon reservoir in the carbon cycle is found here

Mixed gases up to about 50 miles

Who is credited with the discovery of oxygen?

Temperature layer that has the most ozone

What you get when charged particles from the magnetosphere escape into the lower atmosphere

The most significant role for nitrogen in the atmosphere

Coldest temperature layer

Which of the following is an example of conduction?

Hottest layer in the atmosphere

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

Temperature layer not associated with the ionosphere

What temperature layer is not in the homosphere?