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ERS Quiz 9 Review - Intro To Weather
Test Description: Intro to Weather - Weather variables - Station Model - Isotherms - Isobars - Pressure Gradient
Instructions: Answer all questions to get your test result.
1) Which variable is not found on a station model?
A
Wind Direction
B
Pressure Trend
C
Temperature
D
Wind Chill
2) Which variable on a station model DOESN'T indicate the likelihood of precipitation?
A
Wind Speed
B
Cloud Cover
C
Pressure
D
Dew Point
3) Atmospheric pressure can be measured in all the following units except:
A
atmospheres
B
millibars
C
micrometers
D
inches
4) All of the following are rules of iso-mapping EXCEPT:
A
Isolines should increase by a consistent interval.
B
Isolines should extend to the end of the map.
C
Isolines should never intersect.
D
Isolines should curve around the value that it represents.
5) The formula for pressure gradient is:
A
Pressure value / time
B
Pressure value / distance
C
Change in value / distance
D
Change in value / time
6) Dew point temperature is:
A
the temperature that is measured on a sling psychrometer
B
the temperature it is during precipitation
C
the amount of moisture in the air
D
the temperature it would have to be in order for it to precipitate
7) Relative humidity is:
A
the amount of water vapor in the air
B
the amount of space in the air taken up by water vapor
C
the quantity of water molecules in the air
D
the percentage of the air that's saturated with water vapor
8) Low pressure conditions are usually:
A
high temperature and low moisture
B
low temperature and low moisture
C
low temperature and high moisture
D
high temperature and high moisture
9) Pressure moves:
A
from North to South
B
from an area of high concentration to an area of low concentration
C
from an area with high temperatures to an area of low temperatures
D
from an area of low concentration to an area of high concentration
10) Wind direction is named by:
A
the area in which the wind is blowing from
B
the area that has the highest winds
C
the area in between the high and the low pressures
D
the area in which the wind is blowing towards
11) A coded pressure of 013 represents:
A
901.3 mb
B
1001.3 mb
C
9001.3 mb
D
1013.0 mb
12) When air temperature increases, the density of the air:
A
stays the same
B
increases, then decreases
C
decreases
D
increases
13) 996.4 mb is equal to how many inches of mercury?
A
29.45 inches
B
29.42 inches
C
29.50 inches
D
29.40 inches
14) What pressure conditions can be expected when the air temperature and dew point temperature are close together?
A
High pressure conditions
B
Low to high pressure conditions
C
high to low pressure conditions
D
Low pressure conditions
15) Which kind of air can hold the most amount of water vapor?
A
Warm air
B
Dense air
C
Cool air
D
Moist air
16) When the dew point temperature and air temperature are far apart in value, what is the likelihood of precipitation?
A
It's medium
B
It's low
C
It's high
D
It's hard to tell
17) Station models represent temperature using which units of measurement?
A
Degrees Celsius
B
Degrees Fahrenheit
C
Kelvin
D
None of the above
18) Which amount of cloud cover would indicate the greatest chance of precipitation?
A
100%
B
75%
C
25%
D
50%
19) What is the approximate relative humidity if the dry-bulb temperature is 20 degrees Celsius and the wet-bulb temperature is 12 degrees Celsius?
A
33%
B
44%
C
36%
D
30%
20) High pressure air is usually:
A
sinking due to low temperatures and low moisture
B
rising due to low temperatures and low moisture
C
rising due to high temperatures and high moisture
D
sinking due to high temperatures and high moisture
*select an answer for all questions
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