# ERS Quiz 9 Review - Intro To Weather: Question Preview (ID: 16969)

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High pressure air is usually:
a) sinking due to low temperatures and low moisture
b) sinking due to high temperatures and high moisture
c) rising due to high temperatures and high moisture
d) rising due to low temperatures and low moisture

996.4 mb is equal to how many inches of mercury?
a) 29.42 inches
b) 29.40 inches
c) 29.50 inches
d) 29.45 inches

Which amount of cloud cover would indicate the greatest chance of precipitation?
a) 100%
b) 75%
c) 50%
d) 25%

When the dew point temperature and air temperature are far apart in value, what is the likelihood of precipitation?
a) It's low
b) It's high
c) It's medium
d) It's hard to tell

Station models represent temperature using which units of measurement?
a) Degrees Fahrenheit
b) Degrees Celsius
c) Kelvin
d) None of the above

Which kind of air can hold the most amount of water vapor?
a) Warm air
b) Cool air
c) Moist air
d) Dense air

What pressure conditions can be expected when the air temperature and dew point temperature are close together?
a) Low pressure conditions
b) High pressure conditions
c) Low to high pressure conditions
d) high to low pressure conditions

A coded pressure of 013 represents:
a) 1001.3 mb
b) 901.3 mb
c) 1013.0 mb
d) 9001.3 mb

When air temperature increases, the density of the air:
a) decreases
b) increases
c) stays the same
d) increases, then decreases

Pressure moves:
a) from an area of high concentration to an area of low concentration
b) from an area of low concentration to an area of high concentration
c) from an area with high temperatures to an area of low temperatures
d) from North to South

Wind direction is named by:
a) the area in which the wind is blowing from
b) the area in which the wind is blowing towards
c) the area in between the high and the low pressures
d) the area that has the highest winds

Relative humidity is:
a) the percentage of the air that's saturated with water vapor
b) the amount of water vapor in the air
c) the amount of space in the air taken up by water vapor
d) the quantity of water molecules in the air

Low pressure conditions are usually:
a) high temperature and high moisture
b) low temperature and low moisture
c) high temperature and low moisture
d) low temperature and high moisture

Dew point temperature is:
a) the temperature it would have to be in order for it to precipitate
b) the temperature it is during precipitation
c) the temperature that is measured on a sling psychrometer
d) the amount of moisture in the air

The formula for pressure gradient is:
a) Change in value / distance
b) Change in value / time
c) Pressure value / distance
d) Pressure value / time

a) Wind Chill
b) Temperature
c) Pressure Trend
d) Wind Direction

All of the following are rules of iso-mapping EXCEPT:
a) Isolines should curve around the value that it represents.
b) Isolines should never intersect.
c) Isolines should extend to the end of the map.
d) Isolines should increase by a consistent interval.

Atmospheric pressure can be measured in all the following units except:
a) micrometers
b) millibars
c) atmospheres
d) inches

Which variable on a station model DOESN'T indicate the likelihood of precipitation?
a) Wind Speed
b) Dew Point
c) Pressure
d) Cloud Cover

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) 36%
b) 30%
c) 44%
d) 33%

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