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E&U:Holt Chapt.25

Key Terms and Concepts

QuestionAnswer
Describe Cloud Seeding. Freezing nuclei and added to clouds to begin and accelerate the condensation and precipitation process yielding rain rather than dangerous storms.
Describe the job of a severe storm forecaster; and tell where you might be located, and why. These technicians monitor and predict tornado and hurricane formation and tracking. Accurate advance warning is critical to public safety.
Define air mass: This is a large body of air with similar/uniform temperature and humidity characteristics throughout.
Name the instrument that is used to measure wind speed. An anemometer.
State the units employed to describe wind speed. Knots, which are equal to 1.15 miles per hour.
Describe an anticyclone. High pressure air mass with blue skies and sun shine.
Explain a cold front. The boundary between two or more air masses where cold and dry air is pushing into a region previously occupied by warmer, moister air.
Name the source region of cold, dry air. Continental Polar, such as from Canada.
Tell when hurricanes occur, how large they are, and how long they last. Low Pressure storms arriving in the Fall, 600 miles in diameter, for weeks!
Define an isobar. A line on a map connecting points of equal air pressure.
Describe a Maritime Tropical air mass. Air mass formed over the Gulf of Mexico; thus, hot and moist.
Radio Detection and Ranging. Radar technology first used in WW2 to find German submarines. Now used in meteorology to provide data for computer modeling and analysis.
Name the arrangement (diagram) used to show information about a particular location at a particular moment. A station model.
What is a typhoon? A hurricane in the Pacific Ocean.
When, where and how long do tornados last? Tornado alley is where, spring is when, and minutes is how long they live.
Explain how thunder is created. Lightning creates a pipe line in the atmosphere. When the molecules rush back in and collide, sound waves are released and thunder is heard.
Created by: whearn
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