Exam 10: Weather Thunderstorms and Tornadoes

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Moist air that is forced to rise over a mountain range expands and cools through the __________________ effect.

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Low-pressure zones circulate counterclockwise in the northern hemisphere.

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Moisture that evaporates from the oceans returns after condensation, precipitation, and runoff in the __________________ cycle.

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A(n) _________________ cloud forms when a rotation cell sags below the cloud base, indicating tornado danger.

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Water temperatures in the northern Pacific Ocean vary from warm to cool due to the ____.

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Tornadoes form near the trailing edge of thunderstorms.

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In an adiabatic process, ____.

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At the dew point, ____.

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Small areas of rapidly descending air below a thunderstorm called __________________ create temporary regions of high-speed winds.

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The latent heat (heat of condensation) released by condensing liquid ____.

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A(n) __________________ is a U.S. snow storm with wind speeds above 56 km/h.

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Describe four steps that can be taken to minimize the danger of being hurt by lightning during a thunderstorm.

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The Coriolis effect arises because ____.

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Tornado strength is classified from EF0 to EF5 on the Enhanced __________________ Scale.

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When air near the ground is heated, air pressure ____.

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A tornado system can be detected on Doppler radar by the appearance of a ____ echo.

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Strong, warm _________________ winds can descend from the Rocky Mountains to affect areas east of the range.

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Dust storms are caused by natural conditions, which are not affected by human activity.

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Describe the source and effects of an El Niño event.

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The effects of drought in the United States ____.

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