#1
A weather vane measures this
What is wind DIRECTION
This is a tornado over water
What is a waterspout
This scale measures and categorizes wind speed and damage
A single updraft system in a thunderstorm is called a...
What is a cell
The Saffir-Simpson scale measures what weather events?
What are hurricanes
A long line of advancing thunderstorms
What is a squall line
This is a cylinder of thick whirling clouds and rain that surrounds the middle of a hurricane
What is an eyewall
What unit of pressure is approx equal to atmospheric pressure?
What is the Bar
High-altitude weather conditions are measured by...
What are weather balloons
This is the most intense type of downburst
What is a microburst
Lines of equal pressure on a weather map are called?
What are isobars
This instrument measures relative humidity
What is an hygrometer
This is often the first visible sign that a tornado is forming
What is a wall cloud
Define hurricane
What are intense, low-pressure systems that develop in the tropics. They include swirling, destructive winds.
This is a grouping of numbers and symbols on a weather map that are used to present conditions at each weather station
What is a station model
Lines of equal heat on a weather map are called?
What are isotherms
What portion of a lightning bolt produces thunder?
What is the return stroke
What are the 3 main factors that determine the earth's weather? (REV!)
What are heat energy, uneven distribution of heat energy, and water vapor
What do hurricanes require to form?
What are a warm ocean and a region where the Coriolis effect is pronounced.
This is a map that gives a summary of the weather conditions throughout the entire country at one point in time
What is a surface weather chart
This device simultaneously measures and transmits meteorological data from a weather balloon to weather stations.
What is a radiosonde
List the stages of a thunderstorm
What are: Cumulus (rapidly growing cumulus clouds; no precip), Mature (precip arrives; peak of strength of storm; cloud grows larger), Dissipating (updraft goes away and cuts off power supply to storm, clouds evap, precip tapers off)
What does Doppler radar measure?
What is both precipitation and the speed and direction of winds
What is the general name for hurricanes and other rotating tropical low-pressure systems?
What are tropical cyclones