Atmosphere
Relative Humidity & Dewpoint
Wind
Air Masses & Fronts
Weather Tools
100
The greatest atmospheric pressure occurs in which layer of the atmosphere?
troposphere
100
What is the relative humidity when the dry-bulb
temperature is 18°C and the wet-bulb temperature is 8°C?
19%
100
Wind blows from areas of
high pressure to low pressure
100
Which air mass is associated with low relative humidity and high air temperature?
continental tropical (cT)
100
An air temperature of 30°C is equal to
84°F
200
In which zone of the atmosphere would a temperature of 95°C most likely occur?
thermosphere
200
What is the dewpoint when the dry-bulb
temperature is 18°C and the wet-bulb temperature is 17°C?
16°C
200
In which direction do the surface winds blow around a low-pressure system in the Northern Hemisphere?
counterclockwise and inward
200
Which type of front is represented by this cross section?
warm front
200
The weather instrument that measures air pressure
Barometer
300
As altitude within the stratosphere increases, the
temperature generally
increases
300
What is the dewpoint when the dry-bulb
temperature is 15°C and the wet-bulb temperature is 12°C?
10°C
300
Which location most likely recorded the highest wind speed?BONUS: Why?
B
Highest pressure gradient, closest isobars
300
Which statement best describes the difference in air temperature and humidity between the mP and cT
air masses?
The mP air mass is cooler and more humid.
The cT air mass is warmer and less humid.
300
Convert one atmosphere into millibars and inches
1013.25 mb AND 29.92 in of Hg
400
Which statement best describes the mesosphere?
A) It is warmer at the top than at the bottom.
B) The top is 80 kilometers above sea level.
C) It has greater pressure at the top than at the
bottom.
D) It absorbs large amounts of water vapor from the
troposphere.
B
400
The dewpoint is 13°C. What is the wet-bulb
temperature on a sling psychrometer if the dry-bulb temperature is 16°C?
14°C
400
What general compass direction is the wind blowing from?
northeast
400
Which location is experiencing precipitation and a decrease in temperature.
Location B
400
Name the TWO weather instruments that measure wind direction and wind speed AND which instrument measures which.
Anemometer (wind speed)
Wind/Weather Vane (wind direction)
500
What do the tropopause, stratopause, and mesopause all have in common?
A - Each is a point of maximum temperature in its layer of the atmosphere.
B - Each is an interface between two layers of the atmosphere.
C - Each is a region of increasing pressure within the atmosphere.
D - Each is a zone of decreasing water vapor content within the atmosphere.
Each is an interface between two layers of the atmosphere. (interface = point where two things meet)
500
The relative humidity is 73%.
The difference is 3°C.
What is the dry-bulb temperature?
19°C
500
Calculate the pressure gradient from B to C, given the distance from B to C is 250mi.
With CORRECT units.
~0.072mb/mi
(from 0.068-0.076mb/mi)
500
Draw a cross section of a cold front including:
- temperatures of air masses
- arrows showing movement of air masses
- frontal boundary between air masses
draw on board
500
The name of this instrument AND what it measures
Psychrometer OR Sling Psychrometer
Measures wet-bulb and dry-bulb temperatures,