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- 1. Multiple Choice
The amount of ___________ in the air varies greatly from place to place and time to time.
water vapor
nitrogen gas
oxygen gas
argon gas
- 2. Multiple Choice
Gases in the air that are present in very small amounts are called:
minority gases
oxygen gases
low density gases
trace gases
- 3. Multiple Choice
Earth is surrounded by an envelope of gases called the ___________________.
geosphere
hydrosphere
atmosphere
lithosphere
- 4. Multiple Choice
When gasoline or other fuels are burned ______________ gas is released.
carbon dioxide
oxygen
ozone
nitrogen
- 5. Multiple Choice
Clouds form when water vapor ________________ out of the air.
condenses
precipitate
extracts
evaporates
- 6. Multiple Choice
Water falling form the clouds in the form of rain, sleet, or snow is called:
evaporation
transpiration
condensation
precipitation
- 7. Multiple Choice
The term used to describe the condition of Earth's atmosphere at a given place or time is
weather
atmosphere
water vapor
nitrogen gas
- 8. Multiple Choice
What do dust, smoke, salt, and chemicals have in common?
The are gases in the air.
They make up water vapor in air.
They are particles in air.
They are found only in pure air.
- 9. Multiple Choice
Which of these does a fire need to burn?
nitrogen
carbon dioxide
oxygen
argon
- 10. Multiple Choice
Which of these do plants need to make food using photosynthesis?
argon
carbon dioxide
nitrogen
oxygen
- 11. Multiple Choice
which gas makes up about 21 percent of dry air in the atmosphere?
nitrogen
oxygen
carbon dioxide
argon
- 12. Multiple Choice
True or False: Oxygen is the most abundant gas in the atmosphere.
True
False
- 13. Multiple Choice
Carbon dioxide makes up much less than 1% of Earth's atmosphere.
True
False
- 14. Multiple Choice
Water exists as both a liquid and a gas in our atmosphere.
True
False
- 15. Drag and Drop
There is more water vapor in the (a) than in the (b) .
rain forestdesert - 16. Multiple Choice
True or False: Pure air contains only gases.
True
False
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