Composition of the Atmosphere

Front

What is the composition of the Earth's atmosphere?

Back

The Earth's atmosphere is composed mainly of nitrogen (N2), oxygen (O2), and argon (Ar), along with trace amounts of other gases.

Front

What happens to air temperature as altitude increases?

Back

As altitude increases, the temperature of the air generally decreases because the air molecules become less dense.

Front

What is the largest component of the Earth's atmosphere?

Back

Nitrogen (N2) makes up the largest component of the Earth's atmosphere, accounting for about 78%.

Front

What are the three key components of air?

Back

The three key components of air are nitrogen (N2), oxygen (O2), and argon (Ar).

Front

What is water vapor?

Back

Water vapor is the gaseous state of water and is an important component of the atmosphere, contributing to weather and climate.

Front

What role does carbon dioxide (CO2) play in the atmosphere?

Back

Carbon dioxide (CO2) is a greenhouse gas that helps trap heat in the atmosphere, playing a crucial role in regulating Earth's temperature.

Front

What is the significance of dust and pollen in the atmosphere?

Back

Dust and pollen are particulate matter in the atmosphere that can affect air quality and weather patterns.

Front

How does the density of air change with altitude?

Back

The density of air decreases with altitude, meaning there are fewer air molecules in a given volume as you go higher.

Front

What is the function of oxygen (O2) in the atmosphere?

Back

Oxygen (O2) is essential for the respiration of most living organisms and is produced by plants during photosynthesis.

Front

What is the role of argon (Ar) in the atmosphere?

Back

Argon (Ar) is an inert gas that makes up about 0.93% of the atmosphere and does not react with other substances.