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                       h.  What kind of drafts predominate in the dissipating stage of a thunderstorm?


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                       i.  In which stage of the life-cycle of a thunderstorm do updrafts and downdrafts exist
                          at the same time?


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                       j.  What material is hail composed of?


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                       k.  What are the two greatest hazards to aircraft produced by a thunderstorm?

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                       l.  Which thunderstorm hazard may cause temporary loss of vision and/or damage to

                         electronic equipment?


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                       m.  What does a roll cloud indicate?


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                       n.  What type of pressure occurs in the spiral cone of a tornado?


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