Earth's Atmosphere

How does the atmosphere protect life on Earth?

• all of these are true

• It provides the gases which living things need.
• It keeps in the warm temperatures.
• It protects us from harmful sun rays and meteors.

Earth's atmosphere is made up of 

• liquids

• solid particles
• gases
• all of the answers

There is more Oxygen in Earth's atmosphere than any other gas.

• True

• False

True or False - Since Argon is just a trace gas, it is not really important that we have it in our atmosphere.

• True
• False

In which of Earth's atmospheric layers is the ozone layer found?

• Thermosphere
• Mesosphere
• Stratosphere
• Troposphere

Air takes up space, so it has

• mass
• volume
• density
• pressure

Discovering that a balloon filled with air weighs more than a deflated balloon proves that air has

• mass
• volume
• density
• pressure

Which layer of the atmosphere has the most pressure?

• Exosphere
• Thermosphere
• Stratosphere
• Troposphere

In which layer of the atmosphere does weather occur?

• Mesosphere
• Thermosphere
• Stratosphere
• Troposphere

Where is the altitude the greatest?

• 1
• 2
• 3
• 4