Science 7 Weather

Front 1

large body of air that has the same characteristics of temperature and moisture content as the part of Earth's surface over which it formed

Back 1

Air Mass

Front 2

winter storm that lasts at least three hours with temperatures of -12C or below, poor visibility, and winds of at least 51km/h; body temperature drops and body processes slow down

Back 2

Blizzard

Front 3

temperature at which air is saturated and condensation forms

Back 3

Dew Point

Front 4

a stratus cloud that forms when air is cooled to its dew point near the ground

Back 4

Fog

Front 5

boundary between tow air masses with different temperatures, density, or moisture; can be cold, warm, occluded, and stationary

Back 5

Front

Front 6

amount of water vapor held in the air

Back 6

Humidity

Front 7

large, severe storm that forms over tropical oceans, has winds of at least 120 km/h, and loses power when it reaches land

Back 7

Hurricane

Front 8

lines drawn on a weather map that connect points having equal atmospheric pressure; also indicate the location of high- and low-pressure areas and can show wind speed

Back 8

Isobars

Front 9

line drawn on a weather map that connects points having equal temperature

Back 9

Isotherm

Front 10

studies weather and uses information from Doppler radar, weather satellites, computers and other instruments to make weather maps and provide forecasts

Back 10

Meteorologist

Front 11

water falling from clouds--including rain, snow, sleet, and hail--whose form is determined by air temperature

Back 11

Precipitation

Front 12

measure of the amount of moisture held in the air compared with the amount it can hold at a given temperature; can range from 0% to 100%

Back 12

Relative Humidity

Front 13

indicates weather conditions at a specific location, using a combination of symbols on a map

Back 13

Station Model

Front 14

violent, whirling windstorm that crosses land in a narrow path and can result from wind shears inside a thunderhead

Back 14

Tornado

Front 15

state of the atmosphere at a specific time and place, determined by factors including air pressure, amount of moisture in the air, temperature, and wind

Back 15

Weather