Flashcard on Atmosphere

Front

What is the atmosphere?

Back

The blanket of air that surrounds a planet.

Front

Where does weather occur in the Earth's atmosphere?

Back

In the Troposphere.

Front

What happened to the ammonia in the ancient Earth's atmosphere when exposed to sunlight?

Back

It broke up with hydrogen escaping to space and nitrogen building up.

Front

Why did most of the hydrogen (H) and helium (He) escape into space during the ancient Earth atmosphere stage?

Back

Because of the heat.

Front

What percentage of the atmosphere is made up of nitrogen?

Back

78%.

Front

What are the main layers of the Earth's atmosphere?

Back

Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.

Front

What is the primary gas in the Earth's atmosphere?

Back

Nitrogen.

Front

What role does the ozone layer play in the atmosphere?

Back

It protects living organisms by absorbing harmful ultraviolet (UV) radiation from the sun.

Front

What is the greenhouse effect?

Back

The process by which certain gases trap heat in the atmosphere, keeping the Earth warm.

Front

What is the significance of the Troposphere?

Back

It is the lowest layer of the atmosphere where weather occurs and where most of the mass of the atmosphere is found.