Describing Weather, Weather Patterns Flashcards
3.1 and 3.2
What is Weather?
the atmospheric conditions, along with short term changes of a certain place in a certain time
Scientists who predict weather are…
meteorologists
Air temperature
when temperature is high molecules have high kinetic energy that is why molecules in warm air move faster that molecules in cold air
air pressure
air at the earths surface is greater that in the atmosphere
temperature decreases as altitude increases
that is why when you are high up it makes it difficult to breath
what measures air pressure
barometer
humidity
the amount of water vapor in the air
what measures wind
anemometer
dew point
temperature at which air is saturated and condensation can occur
clouds
are water droplets or ice crystal suspended in the atmosphere
precipitation
occurs when cloud droplets combine and become large enough to fall back to earth
types of precipitation
rain hail sleet and snow
high pressure system
a large body of circulating air with high pressure in its CENTER and lower pressure in the outside
low pressure pressure in the CENTER and higher pressure in the outside
low pressure system
air masses
large bodies of air that have uniform temperature humidity and pressure
