Weather Test Flashcards
(29 cards)
Air Pressure
The weight of a column of air in the atmosphere pushing down on earth
(list in order) layers of atmosphere
(top) exosphere
thermosphere
mesosphere
stratosphere
(bottom) troposphere
Exosphere Important Fact
Space ships run through the exosphere and it is the COLDESTTT layer of the atmosphere BURRRR
Atmosphere
The mixture of gasses that suround the earth and other planets
Ozone Layer
A part in the stratosphere that protects earth from harmful UV rays
Troposphere important fact
The troposphere is the closest layer to earth and birds, airplanes, and hot air balons fly in this layer. This is also where weather occurs.
Stratosphere important fact
The ozone layer is in the stratosphere
Thermosphere important fact
In the thermosphere are satellites and the Northern Lights.
Humidity
The quantity of water vapor in the atmosphere.
Relative humidity
A measure of how much water vapor is in the atmosphere compared to the maximum possible.
Psychrometer
A device to mesure humidity in the atmosphere.
What are the steps for using a Psychometer?
- Wet the wet bulb with water
- Swing the bulbs around on the stick
- Subtract the dry bulb temp by the wet bulb temp
- Use the number of the temp of the dry bulb and the subtracted number to find the percentage.
Air Mass
A large body of air with roughly the same temperature and humidity.
Jet stream
Bands of high- speed winds about 10km above Earth’s surface. Blowing from west to east with air masses being carried in its tracks.
Cold Front
When cold air meets a mass of warmer air. The cold air will push its way under the warmer air causing the warmer air to go into the atmosphere caused by the denseness of the cold molecules. Causing violent weather and thunderstorms
Warm Front
When warm air meets a mass of cooler air and the warm air rises above the cool air because of the diffrences in density and molecule arrangement.Causing humidity and warmer temperatures.
Stationary Front
When warm air and cold air masses meet and do not move. This can stay for a few days causing humidity and warmer temperatures.
Occluded Front
When a warm front is overtaken from behind by a cold front. This is the only front with 3 air masses. Occluded fronts are associated with presipatation.
Global Winds
The main belts of wind that move in a particular direction across the earth.
Temp/Altitude
As the altitude increases the temperature decreases.
Pressure/Altitude
As the altitude increases the air pressure decreases.
Density/Altitude
As the altitude increases the air density decreases.
What is the primary reason that the equator is warmer than the poles on earth?
The uneven heating of the earth. The equator gets direct sunlight while the poles get indirect sunight.
What causes wind?
Air pressure diffrences in Earth’s atmosphere.
