Earth's Atmosphere

Front

What is the composition of Earth's atmosphere?

Back

Earth's atmosphere is composed mainly of nitrogen (78%), oxygen (21%), and trace amounts of other gases including carbon dioxide, argon, and water vapor.

Front

What is the troposphere?

Back

The troposphere is the lowest layer of Earth's atmosphere, where most weather occurs and where the air is densest.

Tags

NGSS.MS-ESS2-5

Front

What happens to air pressure as altitude increases?

Back

As altitude increases, air pressure decreases because there is less air above pushing down.

Front

What is the role of carbon dioxide in the atmosphere?

Back

Carbon dioxide is a greenhouse gas that helps trap heat in the atmosphere, contributing to the greenhouse effect.

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

Front

What is the significance of the ozone layer?

Back

The ozone layer, located in the stratosphere, absorbs most of the Sun's harmful ultraviolet radiation.

Front

How does temperature change with altitude in the troposphere?

Back

In the troposphere, temperature generally decreases with increasing altitude.

Front

What is the exosphere?

Back

The exosphere is the outermost layer of Earth's atmosphere, where the atmosphere thins out and merges with outer space.

Front

What is the stratosphere?

Back

The stratosphere is the layer above the troposphere, characterized by a temperature increase with altitude and containing the ozone layer.

Front

What is atmospheric density?

Back

Atmospheric density refers to the mass of air per unit volume, which decreases with increasing altitude.

Front

What is the thermosphere?

Back

The thermosphere is a layer of the atmosphere above the mesosphere, where temperatures can rise significantly due to solar activity.