Shared Flashcard Set

Details

Weather Unit
Knipp 7F
35
Science
7th Grade
05/09/2013

Additional Science Flashcards

 


 

Cards

Term
From 1950-1998 what state had the highest number of recorded F3-F5 tornados per 3700mi2
Definition
Oklahoma
Term
What is the average speed of a tornado
Definition
30mph
Term
what is the direction of an average tornado
Definition
NE
Term
What are the peak months of tornado activity
Definition
April, May, June
Term
What time of day do most occur
Definition
Spring in the Afternoon 3-9pm
Term
what are the strongest recorded tornado winds
Definition
302mph
Term
what is the longest recorded tornado path
Definition
215
Term
Air Mass
Definition
large body of air that the same characteristics of temperature and moisture content as the part of the earth over which it formed
Term
Front
Definition
boundary line between two air masses with different temperatures, density, or moisture; can be cold, warm, occluded, and stationary
Term
Tornado
Definition
violent, whirlimg wind storm that crosses land in a narrow path and can result from wind shears inside a thunder head
Term
Hurricane
Definition
large, severe storm that forms over tropical oceans, has winds of at least 120 km/h, and loses power when it reaches land
Term
Blizzard
Definition
winter storm that lasts at least three hours with temperatures of -12 degrees C or below, poor visibility, and winds of at least 115 km/h
Term
Meteorologist
Definition
studies weather and uses information from Doppler radar, weather satellites, computers, and other instruments to make weather maps and provide forecasts
Term
Station model
Definition
indicates weather conditions at a specific location, using symbols on a map
Term
Isotherm
Definition
line drawn on a weather map that connects points having equal temperature
Term
Isobar
Definition
lines drawn on a weather map that connects points having equal atmospheric pressure, also indicate location of high and low pressure areas and can show wind speed
Term
Lightning
Definition
is caused when two portions of a cloud are oppositely charged and when a current flows in-between the two oppositely charged portions
Term
Thunder
Definition
The sound of a lighting strike
Term
Thunderstorm
Definition
occur in warm, moist air masses and along fronts heavy rain can cause tornados
Term
Cold Front
Definition
occurs when colder air advances towards warm air
Term
Warm Front
Definition
occurs when warm air advances toward cold air
Term
Occluded front
Definition
involves three air masses at different temperatures which are; colder air, cold air, and warm air
Term
Air mass from Caribbean
Definition
Warm/moist
Term
Air mass from Mexico
Definition
Hot/Dry
Term
Air mass from Canada
Definition
Cold/Dry
Term
Air mass from Atlantic
Definition
Cool/Moist
Term
Air mass from North Pacific
Definition
Cool/Moist
Term
Air mass from South Pacific
Definition
Warm/Moist
Term
barometer
Definition
measures atmospheric pressure
Term
Stationary Front
Definition
Occurs when neither the warm front nor cold front can advance
Term
Anticyclones
Definition
High pressure areas associated with fair weather
Term
Cyclone
Definition
Large swilling areas of low pressure associated with stormy weather Same as a hurricane but in the Indian Ocean and spins clockwise
Term
Low pressure
Definition
Area that has cold temperatures
Term
High pressure
Definition
Area that has warm temperatures
Term
Fujita Scale
Definition
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