Earth's Atmosphere

Front

What is the composition of Earth's atmosphere?

Back

Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases.

Front

What layer of the atmosphere do we live in?

Back

We live in the troposphere, which is the lowest layer of Earth's atmosphere.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which certain gases in the atmosphere trap thermal energy and radiate it back to Earth, helping to keep the planet warm.

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS3-5

Front

Why is the ozone layer important?

Back

The ozone layer is important because it blocks harmful ultraviolet (UV) rays from the sun, protecting living organisms on Earth.

Front

What happens to atmospheric gases as altitude increases?

Back

As altitude increases, atmospheric gases become thinner, leading to lower air pressure and less oxygen.

Front

What is the main cause of weather on Earth?

Back

Weather occurs primarily in the troposphere due to the presence of water vapor and the interaction of air masses.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Front

What is the stratosphere?

Back

The stratosphere is the second layer of Earth's atmosphere, located above the troposphere, and contains the ozone layer.

Front

What is air pressure?

Back

Air pressure is the force exerted by the weight of air above a given point, decreasing with altitude.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Front

What are the main gases in the atmosphere?

Back

The main gases in the atmosphere are nitrogen (78%), oxygen (21%), and argon (0.93%), along with trace amounts of other gases.

Front

What is the thermosphere?

Back

The thermosphere is the layer of the atmosphere above the mesosphere, characterized by high temperatures and the presence of ionized gases.