Composition and Behavior of Earth's Atmosphere

Front

Where is air more dense?

Back

Air is more dense at the bottom of a mountain.

Front

What is the second most abundant gas in our atmosphere?

Back

Oxygen is the second most abundant gas in our atmosphere.

Front

Why does ice float?

Back

Ice floats because solid water is less dense than liquid water.

Front

Why is there less pressure at the top of a mountain?

Back

There is less pressure at the top of a mountain because the air is less dense.

Front

What percentage of the Earth's atmosphere is made up of Nitrogen?

Back

78% of the Earth's atmosphere is made up of Nitrogen.

Front

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

Back

Nitrogen is the most abundant gas in the Earth's atmosphere, making up about 78%.

Front

What is the role of oxygen in the atmosphere?

Back

Oxygen is essential for respiration in most living organisms.

Front

How does altitude affect air pressure?

Back

As altitude increases, air pressure decreases because the density of air decreases.

Front

What is the composition of dry air?

Back

Dry air is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases.

Front

What happens to the density of air as you go higher in the atmosphere?

Back

The density of air decreases as you go higher in the atmosphere.