Vocab
Weather Variables
Clouds & Water Cycle
Air Masses
Severe Weather
100

The atmospheric condition with short-term changes of a certain place at a certain time. 

Weather

100

Air pressure is measured using which instrument? 

Barometer
100

water, in liquid or solid form, that falls from the atmosphere (example: sleet, rain, snow, hail) 

precipitation

100
Large bodies of air that have uniform temperature, humidity, and pressure

air mass

100

A violent, whirling column of air in contact with the ground. 

Tornado

200

The force that a column of air applies on the air or surface 

air pressure

200

The amount of water vapor in the air

humidity

200

White fluffy, heaped or piled up clouds. Nice weather with no storms. 

Cumulus clouds 

200

Forming over Siberia and the Arctic are these air masses. They contain bitterly cold, dry air. 

Artic Air Mass

200

An intense tropical storm with winds exceeding 119 km/h

Hurricane

300

The temperature at which air is saturated and condensation can occur

dew point

300

The measure of kinetic energy of molecules in the air 

air temperature (or temperature) 

300

is the series of natural processes by which water continually moves among oceans, land, and the atmosphere. 

Water Cycle

300

A drier land air mass that brings fast-moving and cold temperatures (usually coming from Canada) 

Continental Polar Air Mass

300

A violent winter storm characterized by freezing temperatures, strong winds, and blowing snow

Blizzard

400

A boundary between two air masses 

Front

400

Humidity is measured by the instrument (a) anemometer (b) thermometer (c) psychrometer (d) barometer

(c) psychrometer

400

These clouds are flat, white, and layered. Causes gloomy skies but no storms. (example: overcast clouds) 

Stratus clouds 

400

Forming over the Atlantic Ocean and Pacific Oceans, this air mass is cold and humid. They often bring cloudy, rainy weather. 

Maritime Polar

400

This storm has a three-stage cycle, (1) cumulus stage (2) mature stage (3) dissipation stage

Thunderstorm

500

The amount of water vapor present in the air compared to the maximum amount of water vapor the air could contain at that temperature. 

relative humidity

500

Wind is measured using an (a) anemometer (b) thermometer (c) psychrometer (d) barometer 

(a) anemometer

500
A cloud that forms near the surface of the Earth 
Fog
500

Forming over the western Atlantic Ocean, the Gulf of Mexico, and the Eastern Pacific Ocean. These moist air masses bring hot, humid air. 

Maritime Tropical

500
The combined cooling effect of the bitterly cold temperature and wind exposed on the skim (this can cause frostbite and hypothermia) 

Wind Chill

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