TOPIC 2: Weather in the Atmosphere

Front

What is the Atmosphere?

Back

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

Front

What is Air Pressure?

Back

The pressure caused by the weight of a column of air pushing down on an area.

Front

What is Altitude?

Back

Elevation above sea level.

Front

What is Wind?

Back

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

Front

What does Stable mean in the context of weather?

Back

Constant.

Front

What is the Composition of the Atmosphere?

Back

Nitrogen (78%), oxygen (21%), consists of traces of argon, carbon dioxide, methane, and ozone (1%).

Front

What are the 4 main layers of the atmosphere?

Back

Troposphere, stratosphere, mesosphere, thermosphere.

Front

What is the Water Cycle?

Back

The continual movement of water among Earth's atmosphere, oceans, and land surface through evaporation, condensation, and precipitation.

Front

What is Evaporation?

Back

The process by which molecules at the surface of a liquid absorb enough energy to change to a gas.

Front

What is Condensation?

Back

The change in state from a gas to a liquid.