Storms
Why is humidity lower in the desert?
less water vapor
Neither air mass really takes over the other.
stationary front
An area of high pressure will most likely result in which type of weather?
clear/fair weather
This is the amount of water vapor in the air
humidity
We measure relative humidity with a....
psychrometer
This cloud type is associated with large low pressure storms
cumulonimbus
When two air masses meet a ____ is formed.
front
An area of low pressure will most likely result in which type of weather?
stormy/cloudy weather
_________ is the percentage of water vapor in the air at a given temperature.
relative humidity
We measure wind speed with a....
anemometer
Tornado Alley is located at a point where the jet stream drives cool, dry, high-pressure air masses from the deserts and mountains of the West toward the East Coast. With which type of air mass do these high-pressure fronts collide to create so many tornadoes?
moist warm/ maritime tropical
Cold dense air slides underneath warm air. The warm air is forced up, cools, and condenses.
cold front
Equal areas of pressure are connected by _____ on a weather map
isobars
Air masses are named by which two things?
humidity and temperature
We measure air pressure with a ....
barometer
A cold, dry air mass collides with a warm, humid air mass over flat land. The warm air is forced upward, causing a powerful updraft. As the air rises, it cools and condenses, creating a powerful downdraft. What type of weather event is forming?
thunderstorm
Cold fronts always bring ____ ahead of them
thunderstorms
The closer the isobars are the ______ it is.
windier
Maritime polar air masses are....
humid and cold
We measure wind direction with a
wind vane
What creates strong hurricanes?
warm water
brings some clouds and gentle rains
warm front
A pressure that reads lower than 30 in would be considered a
low pressure system
What weather factors would increase the chances of precipitation? (list three)
strong wind
low humidity
clear skies
We measure rain fall with a
rain guage