Biology Forums - Study Force

An ordinary thunderstorm
   a. does not produce lightning or thunder.
   b. has a tilted updraft and downdraft.
   c. is a scattered/isolated storm and normally not severe.
   d. does not produce hail.
   e. does not produce precipitation.

Q. 2

Ordinary thunderstorms only last about one hour and begin to dissipate when
   a. lightning neutralizes all the electrical charge in the cloud.
   b. when all the precipitation particles in the cloud turn to ice.
   c. when the downdraft spreads throughout the cloud and cuts off the updraft.
   d. when solar heating at the ground begins to decrease.
   e. when clouds scatter due to the microbursts within the storm system.

Q. 3

The initial stage of an ordinary thunderstorm is the
   a. mature stage.
   b. dissipating stage.
   c. cumulus stage.
   d. multicell stage.
   e. primary stage.

Q. 4

All thunderstorms require
   a. hot air.
   b. divergence of the air aloft.
   c. lifting along some barrier such as a mountain or front.
   d. surface heating.
   e. rising air.

Q. 5

Positive lightning has the potential to cause more damage because it generates a much higher current level and its flash lasts for a longer duration than negative lightning.
   a. True
   b. False

Q. 6

Even though the bright return stroke of lightning travels from the ground up to the cloud, it happens so quickly that our eyes cannot resolve the motion, and we see what appears to be a continuous bright flash of light.
   a. True
   b. False

Q. 7

Scientists understand with certainty how clouds are electrified.
   a. True
   b. False

Q. 8

One theory of cloud electrification states that during the formation of precipitation, regions of separate charge exist within tiny cloud droplets and larger precipitation particles. In the lower part of these particles we find negative charge, while in the upper part we find positive charge.
   a. True
   b. False

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