Atmosphere is relatively thin. Associated with unstable weather conditions and precipitation.

Atmospheric pressure is greater than surroundings. Usually associated with stable weather conditions and clear skies.

Band of high-speed winds about 10 km above Earth's surface.

Cold and warm air masses meet, but neither one can move the other resulting in many days of clouds and precipitation.

Dominant winds that consistently blow in a particular direction over a given region or area of the Earth's surface.

Elevation above sea level.

Fast-moving warm air mass overtakes a slower-moving cold air mass.

Huge body of air that has similar temperature, humidity, and air pressure at any given height.

Movement of Earth's air and water to redistribute heat to and from cool and warm places.

The horizontal movement of air from an area of high pressure to an area of lower pressure.

The relatively thin layer of gases that form Earth's outermost layer.