Weather Instruments
A precipitation gauge measures this.
What is the amount of precipitation?
The layer where weather occurs.
What is the troposphere?
Air pressure is highest when the air is (cool, warm) and (moist, dry).
What is cool and dry?
As altitude increases in the troposphere, temperature generally __.
What is decreases?
A wind vane measures this.
What is wind direction?
This layer is above the stratosphere.
What is the mesosphere?
The variable that most directly determines wind speed.
What is the air pressure gradient?
The general relationship between air temperature and air density.
What is as temperature increases, density decreases?
The relative humidity is 100% when the air reaches this state.
What is saturation?
This instrument measures air pressure.
What is a barometer?
The hottest atmospheric layer.
What is the thermosphere?
The direction of winds around a high-pressure system in the Northern Hemisphere.
What is clockwise and outward?
The main factor that causes temperature to decrease with altitude in the troposphere.
What is the decreasing air pressure?
What happens when the temperature reaches dew point?
condensation
The relative humidity can be found using this instrument.
What is a psychrometer?
The layer with the highest concentration of ozone.
What is the stratosphere?
The approximate pressure in millibars if the pressure is 28.92 inches of mercury.
What is 978 millibars?
The role of convection currents in atmospheric heating.
What is distributing heat through rising warm air and sinking cool air?
If the dry-bulb temperature is 16°C and the wet-bulb is 14°C, the relative humidity is __.
What is 80%?
This instrument measures wind speed.
What is an anemometer?
The approximate altitude range where ozone is most concentrated.
What is 20-35 kilometers?
A station model shows a wind direction from the northwest at 25 knots. How would this be drawn?
draw on board
The layer where temperature begins to increase again due to ozone absorption of UV radiation.
What is the stratosphere?
If the dry-bulb temperature is 4°C and the dewpoint is -4°C, what is the relative humidity?
What is 46%?