Chapter 12- Meteorology
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29 Terms
Thermometer
An instrument used to measure temperature
Sling Pyschrometer
Used to measure Dry Bulb (Temp) and Wet Bulb (Temp) to find Relative Humidity and Dew Point Temp.
Barometer
An instrument that measures atmospheric pressure
Rain Gauge
An instrument used to measure precipitation.
Anemometer
An instrument used to measure wind speed
Wind Vain
an instrument used to determine the direction that the wind is blowing
How do you convert Air Pressure from a Station Model?
<500 - add a 10 and a decimal between last two numbers.
500 - add a 9 and a decimal between last two numbers.
Wet Bulb Depression
the difference between the dry and wet bulb temperature
How does air pressure flow?
Flows from High Pressure to Low Pressure
As Temperature increases, Volume of Air…
Increases
As Temperature Increases, evaporation…
Increases
As Humidity increases, Evaporation…
Decreases
As Surface Area Increases, Evaporation…
Increases
As Wind Increases, Evaporation…
Increases
As Temperature increases, air pressure…
Decreases
As Altitude Increases, air pressure…
Decreases
As Humidity Increases, air pressure…
Decreases
Cold Air = what kind of pressure?
High Pressure
Warm Air = what kind of pressure?
Low Pressure
Wet Air = what kind of pressure?
Low Pressure
Dry Air = what kind of pressure?
High Presuure
Low Pressure Systems
Air Flows Counter Clockwise and inward and Upward. (Warm and Wet).
High Pressure System
Air Flows Clockwise and Outward and Down. (Cold and Dry).
Station Models
diagram that displays data from many different weather measurements for a particular location
Dew Point
The temperature at which condensation begins
Relative Humidity
The amount of water vapor in the air at any given time is usually less than that required to saturate the air. Expressed as a percentage.
100% Humidity, What does that mean in terms of Dew Point and Air Temperature?
The Dew Point and the Air Temperature are close together or the same.
Water Cycle
The continuous process by which water moves from Earth's surface to the atmosphere and back