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- 1. 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
- 2. 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
- 3. 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
- 4. 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
- 5. Multiple Choice
6. 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 can hold; relative humidity represents how much water the air actually holds
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
- 6. 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
- 7. Multiple Choice
What are the characteristics of a high-pressure system?
Wind and rain
Clear skies and sun
Humidity and thunder
Extremely hot temperatures
- 8. 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
- 9. 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 barometric pressure will rise
- 10. Multiple Choice
Which of the following devices measures air pressure?
temperature
hygrometer
barometer
wind vain
- 11. Multiple Choice
What does this symbol represent on a weather map?
loud wind
low pressure
lousy weather
lots of snow
- 12. Multiple Choice
The average conditions of the atmosphere in a particular area over the course of time.
climate
weather
ridiculous
latitude
- 13. Multiple Choice
As seen in the map above, these are lines that measure the strength of wind.
low pressure lines
high pressure lines
barometric pressure
isobars
- 14. Multiple Choice
Saturated air has a relative humidity of
90%
25%
100%
64%
- 15. Multiple Choice
An anemometer measures this
wind direction
wind speed
pressure
temperature
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