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Air and Atmosphere Quiz

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Questions and Answers

What is the major component of air?

Nitrogen (correct)

Oxygen

Carbon dioxide

Argon

Air is composed of only two gases: nitrogen and oxygen.

False

Why do mountaineers carry oxygen cylinders?

Because the air at the top of high mountains is thin and lacks sufficient oxygen for proper breathing.

Almost _____ of air is made up of nitrogen gas.

four-fifths Signup and view all the answers

Match the following gases with their approximate percentage in air:

Nitrogen = 78% Oxygen = 21% Argon = 0.9% Carbon dioxide = 0.03% Signup and view all the answers

What is the primary reason living things require air?

For respiration Signup and view all the answers

Air is visible to the naked eye.

False Signup and view all the answers

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

The amount of air becomes less and less. Signup and view all the answers

Moving air is called __________.

wind Signup and view all the answers

Match the properties of air with their descriptions:

Colorless = Air has no color. Mass = Air has weight. Compressible = Air can be squeezed into smaller volumes. Dissolves in water = Air can mix with water. Signup and view all the answers

Which of the following is NOT a property of air?

Air is visible Signup and view all the answers

Air is only present in the atmosphere and is not dissolved in water.

False Signup and view all the answers

What occurs when a glass bottle is inverted in water and then tilted?

Air bubbles escape and water enters the bottle. Signup and view all the answers

Study Notes

Air and Atmosphere

Air is a mixture of gases, invisible and odorless
Air surrounds Earth, forms a layer called atmosphere
All living things need air for breathing
Air's presence can be felt as wind
Air, even in water (dissolved), is essential for life
Air is transparent, colorless, tasteless, and odorless
Air does have mass and occupies space
Air can be compressed

Properties of Air

Air contains Nitrogen (78%), Oxygen (21%), Carbon Dioxide, and other trace gases (1%)
Air composition varies slightly by location and season
Air at high altitudes has less oxygen, making breathing difficult

Atmosphere

Atmosphere surrounds Earth, becoming thinner at higher altitudes
Air is essential for life on Earth, providing oxygen

Composition of Air

Nitrogen (78%) is the primary component
Oxygen (21%) is vital for respiration
Small amounts of other gases (carbon dioxide, water vapor, argon) and dust are also present
The composition of air varies depending on location and season

Experiments and Observation/ Inference

Air occupies space (demonstration with inverted glass bottle, experiment)

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Description

Test your knowledge on the basics of air and the atmosphere. This quiz covers the composition of air, its properties, and its essential role in supporting life on Earth. Learn about the importance of air for respiration and how it varies in different conditions.