Water in the Air
Instruments
Air masses
Fronts
Severe Weather
100
amount of water vapor in the air
What is humidity?
100
measures relative humidity
What is a psychrometer?
100
a cold dry air mass
What is continental polar?
100
Cold air mass overtakes warm air mass
What is a cold front?
100
low pressure system
What is cyclone?
200
water vapor turns into a liquid
What is condensation?
200
measures air pressure without liquid
What is an aneroid barometer?
200
wet and warm air mass
What is maritime tropical?
200
Warm air is cut off from the ground between two colder air masses
What is an occluded front?
200
Stormy weather with winds spiraling in and up
What is a cyclone (low pressure)?
300
amount of water vapor in the air compared to how much water vapor the air can hold at a given temperature
What is relative humidity?
300
measures wind speed
what is an anemometer?
300
originates from Mexico
What is continental tropical
300
warm air overtakes cold air
What is a warm front?
300
high winds, hail, flash floods, and tornadoes
What is a severe thunderstorm?
400
The temperature at which condensation begins
What is dew point?
400
a cold moist air mass
What is maritime polar
400
mT meets its match with a mP. Neither wins.
What is a stationary front
400
begins as a group of thunderstorms moving over tropical ocean waters
What is a hurricane?
500
layered or spread out
What is Stratus?
500
carry radio transmitters that send measurements to stations on the ground
What is a weather balloon?
500
develops over warm areas in the Pacific Ocean
What is maritime tropical?
500
boundary between two air masses that don't mix
What is a front?
500
listen to your tv or radio, remain indoors away from windows, keep an emergency supply kit
What are general precautions for severe weather?