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The type of air mass which brings hot, dry weather
What is continental tropical?
This indicates that a frontal cyclone has reached its full strength
What is the formation of an occluded front?
This forms the brilliant flash of a lightning bolt
What is the return stroke?
A wind that reverses its direction from season to season
What is a monsoon?
The reason the Southern Hemisphere receives more insolation during the Southern summer than the Northern Hemisphere receives during the Northern summer
What is Earth is closer to the sun?
The instrument which uses a flexible, airtight metal box to measure changes in atmospheric pressure
What is an aneroid barometer?
This measures high-altitude weather conditions
What is a weather balloon?
The scale used to rank hurricane strength
What is the Saffir-Simpson scale?
When the relative humidity is 100%, the air is
What is saturated?
A prediction of the weather in the near future
What is the weather forecast?
A tropical cyclone with wind speeds between 39 and 74 mi/hr
What is a tropical storm?
This is when a rotating column of air becomes a tornado
What is when it reaches the ground?
The point where the solar wind pushes on Earth's magnetic field
What is the magnetopause?
The feathery deposit of ice crystals that forms when water vapor crystallizes on the ground
What is frost?
The instrument which indicates the direction of wind
What is the weather vane?
Heat transfer by electromagnetic waves
What is radiation?
The most destructive force of a hurricane
What is wind?
A map that summarizes the weather conditions throughout the entire country at a single point in time
What is a surface weather chart?
The boundary formed when a cold air mass moves into the territory of a warm air mass
What is a cold front?
A large, rotating updraft in a supercell thunderstorm
What is a mesocyclone?
The ratio of the solar radiation reflected by an object to the solar radiation that strikes it
What is albedo?
The surface winds that blow toward the equator in the tropics
What are trade winds?
The colorful displays which occur when solar wind particles react with molecules in the atmosphere
What are auroras?
A rotating column of air that starts on the ground and is not associated with a cloud
What is a dust devil?
A single updraft system in a thunderstorm
What is a cell?
Numbers and symbols on a weather map that indicate observations at a particular weather station
What is a station model?
The reflected light from high-altitude lightning strikes in distant thunderstorm
What is heat lightning?
The reason a weather balloon expands as it rises?
What is air pressure decreases with altitude?
The type of precipitation which is made of raindrops that freeze into iny balls of ice before they hit the ground
What is sleet?
The type of cloud which usually produces heavy rains, strong winds, and sometimes hail or tornadoes
What is a cumulonimbus clouds?
The process of liquid water turning into water vapor
What is evaporation?
The center of a hurricane
What is the eye?
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"Lines of equal heat" on a weather map are called
What is isotherms?
The reason a hurricane usually begins to weaken when it moves onto a continent
What is the hurricane no longer has access to warm ocean water?