The study of fossils...

The blanket of gases that surrounds our planet.

Regions of high pressure and gentle winds located between 30 degrees north and south latitudes; most of the world's desserts are located in or near these latitudes.

The scientific name for the northern and southern lights.

He popularized evolution in his book, On the Origin of Species.

The layer of the atmospheric region of the atmosphere composed mostly of ions, and acts as a giant mirror by bouncing radio waves back down towards the ground.

The name given to the ITCZ in the 18th century when sail-powered boats would be tapped for periods of days or weeks because of periods when winds would disappear altogether.

The region in which a magnet affects other objects.

This geologist popularized uniformitarianism.

The coldest point in the atmosphere...

Winds that reverse their direction from season to season, and often bring heavy rains.

The process that traps heat in the earth's atmosphere.

This layer of atmosphere is characterized by high temperature.

Strong, high altitude winds in the upper troposphere that are concentrated in narrow, meandering bands of fast moving air.

Belt-like regions that surround the earth and trap particles from the solar wind.

The layer that spans from the earth's surface to an altitude of about 50 miles, and contains a mixture of gases in the air we breathe.

A warm, dry wind that travels down a slope.

The portion of the earth's magnetic field that is affected by the solar winds.