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- 1. Fill in the Blank
Which factor of the weather is defined as a quantity representing the amount of water vapor in the atmosphere?
- 2. Fill in the Blank
Which factor of the weather is defined as the force exerted onto an area by the weight of the atmosphere?
- 3. Fill in the Blank
Which factor affecting weather is defined as a measure of the hotness or coldness of the atmosphere?
- 4. Multiple Choice
What is weather?
The state of the atmosphere at any particular time
The amount of moisture in the air
The number of clouds in the sky
The speed of the wind
- 5. Multiple Choice
Why is the temperature lower at night than during the day?
There is less water in the air at night
The temperature depends on energy from the sun
Winds blow harder at night
There are more clouds at night to block the sun's rays
- 6. Multiple Choice
Which of the following devices measures air pressure?
A
B
C
D
- 7. Multiple Choice
If it's a hot day outside, what can you conclude?
The wind is blowing extremely fast
The air can hold very little moisture
There are a lot of clouds in the sky
The air can hold a lot of moisture
- 8. Multiple Choice
Why can't you see the water vapor in the air?
There is very little of it
It exists as a clear, colorless gas
It's all far away, in the upper atmosphere
It's all been condensed
- 9. Multiple Choice
What is the difference between absolute humidity and relative humidity?
Absolute humidity is expressed as a percentage; relative humidity is expressed as a whole number
Absolute humidity is how much water the air actually holds;relative humidity represents how much water the air contains as a percentage of how much water the air could possibly hold
Relative humidity makes the air sticky; absolute humidity makes the air dry
Absolute humidity represents how much water the air actually holds; relative humidity is how much water the air can hold
- 10. Multiple Choice
Why does it tend to be cool at the Earth's poles?
They have the worst weather
They are farthest from the sun
Sunlight strikes them at extreme angles
They have high absolute humidity
- 11. Multiple Choice
What are the characteristics of a high-pressure system?
Wind and rain
Clear skies and sun
Humidity and thunder
Extremely hot temperatures
- 12. Multiple Choice
If the air is only holding one-third as much moisture as it can possibly hold, what is the relative humidity?
50 percent
25 percent
33 percent
67 percent
- 13. Multiple Choice
What will happen if the relative humidity is 100 percent, and the temperature begins falling?
The air will be sticky and uncomfortable
It will start to rain
The temperature will rise
The atmospheric pressure will rise
- 14. Multiple Choice
When liquid water turns into water vapor
saturated
evaporation
condensation
precipitation
humidity
- 15. Multiple Choice
Amount of water vapor in the air
saturated
evaporation
condensation
precipitation
humidity
- 16. Multiple Choice
Completely filled with water
saturated
evaporation
condensation
precipitation
humidity
- 17. Multiple Choice
When water vapor turns into liquid water
saturated
evaporation
condensation
precipitation
humidity
- 18. Multiple Choice
Water in clouds that comes back to Earth
saturated
evaporation
condensation
precipitation
humidity
- 19. Multiple Choice
Which of the following is NOT a unit for measuring atmospheric pressure?
Pascals
mbar
Atmospheres
Newtons
- 20. Multiple Choice
The average atmospheric pressure at sea level is:
1013 pascals
1013 hectopascals
1013 kilopascals
1.013 atmospheres
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