Atmospheric Layers
Relative Humidity and Dew point
Cloud Formation
Pressure and Station Models
Miscellaneous
100
What is the hottest atmospheric layer?
Thermosphere
100
What page of the ESRT shows information on Relative Humidity and Dew point?
page 12
100
The process whereby water vapor cools and becomes liquid water is called...
condensation
100
Wind flows from areas of ____________ pressure to areas of ____________ pressure.
High, Low
100
What instrument is used to measure atmospheric pressure?
Barometer
200
The two atmospheric layers that contain no water vapor are...
Mesosphere and Thermosphere
200
What is dew point?
The temperature at which water condenses to clouds or fog.
200
The air temperature is 15C and fog begins to form. What is the dewpoint temperature?
15C
200
What is the barometric trend at this location?
decrease by 3.1 mb over the past 30 minutes
200
What two variables is a sling psychrometer used to measure?
relative humidity and dewpoint
300
Which layer extends about 12 to 45 km above the Earth's surface?
Stratosphere
300
What is the dewpoint temperature when the
dry-bulb temperature is 14C and the wet-bulb temperature is 7C.
- 2 C
300
As water vapor is heated, its density...
decreases
300
What direction does wind in high pressure systems move? (Hint: HOC)
Down/out and Clockwise
300
What do isobars that are spaced very close together indicate about wind?
Fast wind speed
400
What happens to the temperature and pressure as you ascend through the stratosphere?
Temperature increases and pressure decreases
400
What is the relative humidity if the dry bulb temperature is 22C and the wet bulb temperature is 18C?
68%
400
If the air is saturated and the dew point and air temperature are equal, what will occur?
Condensation/clouds will form/fog forms
400
What direction does wind in low pressure systems move? (Hint: LICC)
Up/in and Counter-clockwise
400
What sort of weather can we expect as a cold front approaches?
Rain followed by cool conditions
500
What layer of the atmosphere is the ozone layer in?
Stratosphere
500
A student used a sling psychrometer to measure
the humidity of the air. If the relative humidity
was 48% and the dry-bulb temperature was 12C,
what was the wet-bulb temperature?
7 C
500
Most clouds form in which layer of the atmosphere?
Troposphere
500
What is the air pressure at this location?
998.7 mb
500
An air mass that originates over the Gulf of Mexico
and moves northward over the
United States would most likely be labeled on a
weather map as
mT