WEATHER THEORY Flashcards
what is the air composed of?
Nitrogen (78%) and Oxygen(21%)
First atmospheric layer
Troposphere sea level to 36,000’ msl the tempurature decreases as we go upward
Third layer is
Stratosphere above 36,000 ft msl, tempurature goes up as you climb:air is super smooth no turbulence
Inbetween the troposphere and the Stratosphere is what?
the Tropopause air stays the same it does not: air is super smooth no terbulance
Basics of air
pressure high to low and temperature hot to cold
How does pressure change with altitude?
pressure decreases with altitude gains; 1 inch of mercury per 1000 feet of altitude
How does temperature affect pressure?
The hotter it is the less dense the air is: colder the more dense of
What is standard temperature?
15C
How does moisture affect the air?
The air is less dense
What is standard pressure
Standard pressure is 29.92
What is Relative Humidity?
How much moisture the air can hold based on the temperature. not a good way to look at a humidity
What is dew point?
The temperature at which water in the atmosphere The point at which moisture in the air becomes visible or
What is frost?
it is when the outside air temperature and ground is below freezing, and you hit the dew point
What causes weather change?
uneven heating of the earths surface
