5.1 - The Atmosphere Kirby Flashcard

Front

What is atmosphere?

Back

A blanket of gases that surrounds a planet

Front

What is air?

Back

The mixture of gases that make up Earth’s atmosphere

Front

Altitude

Back

A measurement of the distance an object is above sea level

Front

What is atmospheric pressure?

Back

A measure of the force per unit area of air molecules in the atmosphere given altitude

Front

Barometer

Back

An instrument that measures atmospheric pressure

Front

What is the most abundant (plentiful) gas in Earth’s atmosphere?

Back

nitrogen

Front

NItrogen makes up how much of the earth's atmosphere?

Back

78%

Front

What is the second most abundant gas in Earth's atmosphere?

Back

Oxygen

Front

What is the term for the layer of the atmosphere closest to Earth's surface?

Back

Troposphere

Front

What is the term for the weight of the atmosphere pressing down on Earth?

Back

Atmospheric Pressure