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2-2, and 2-3 notes
weather
45
Environmental Studies
7th Grade
04/29/2013

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Cards

Term
air mass
Definition
large body of air that has properties similar to to the part of Earth
Term
front
Definition
a boundary between two air masses of difference in desity, temperature, or moisture
Term
tornado
Definition
a violently rotating column of air in contact with the ground, speed up to 500 km, form at base of cumulionimbus cloud, found in midwest, fujit scale- categories 1-5
Term
blizzard
Definition
winter storm, that have winds at 59 km, low temperature,and can't see further than 400m
Term
wind shear
Definition
the difference between wind speed and direction in a tornado
Term
hurricane
Definition
powerful storms that are created over oceans, winds must be 82 mph, tyyphoons-Pacific, cyclones-Indain ocean, fueled by warm ater
Term
station model
Definition
a weather map that uses symbols
Term
isotherm
Definition
a line that connects points of equal temperature
Term
mereorology
Definition
the study of weather
Term
isobar
Definition
a line that connects points of equal pressure
Term
meteorologist
Definition
someone who studies weather
Term
Lightning
Definition
occurs in a cloud or between one or on the ground
Term
What causes thunder
Definition
rapid heating of air around a bolt of lightning
Term
T/F You can see lightning
Definition
true
Term
Descirbe a thunderstorm
Definition
heavy rain, lightning, thunder and sometimes hail
Term
t/f You can hear thunder
Definition
true
Term
name all four fronts
Definition
Cold, warm, stationary, and Occluded
Term
Warm front
Definition
light warm air that gose over heavie cold air
Term
cold front
Definition
cold air advances to warm air
Term
The three aair masses of different temperature that involves an occluded front
Definition
Cold air, cool air, and warm air
Term
Stationary fronts
Definition
happens when a boundary between air masses stop advancing
Term
T/F Warm fronts go under cold fronts
Definition
false
Term
T/F the most powerful storm is a thunderstorm
Definition
False, Hurricane
Term
T/F You can see further than 400 m in a blizzard
Definition
False
Term
Two ways to know current weather
Definition
thermometer and clouds in the sky
Term
high pressure
Definition
wind blow clockwise, good weather
Term
low pressure system
Definition
wind blows counterclockwise, bad weather (storms, hurricanes)
Term
How tornados form
Definition
warm moist air mass (Ssouth), cold dry air mass (north), jet streams (above)
Term
watch
Definition
conditions fasvorable for a severe storm
Term
warning
Definition
dangerous conditions already exists
Term
Highest number of F3-F5 recorded tornados
Definition
Oklahoma
Term
Why is a supercell a good source of tornados
Definition
Gives more energy and moisture (updraft)
Term
average speed of tornado
Definition
30 mph
Term
what is the direction of an average tornado
Definition
Southwest to Northeast
Term
Peak months of tornado
Definition
April, May, June
Term
Time of day must tornados occur
Definition
3pm-9pm
Term
Longest recorded tornado path
Definition
215 miles
Term
Should you open your windows in a tornado
Definition
No
Term
Where should you in a tornado (in a house)
Definition
basement
Term
Best way to escape a tornado in a car
Definition
side ways
Term
If you are in the open where should you go
Definition
depression in the ground
Term
Determines type of precipitation
Definition
Air temperature
Term
humidity
Definition
amount of water vapor in present air
Term
dew point
Definition
changes with the amount of air
Term
fog
Definition
stratus cloud on the ground
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