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Geog 120 Final Pt. 1
| Term | Definition |
|---|---|
| air mass | Which thunderstorm is most likely to occur within a mT (maritime tropical) parcel of air? |
| convective lifting | Air mass thunderstorms form primarily due to __________. |
| cumulonimbus incus | At which of the following stages of air mass thunderstorm development would you find the tallest largest cumulus type cloud? |
| downdrafts | In a dissipating air mass thunderstorm, __________ dominate |
| 2 pm - 9 pm | Which of the following times might one expect an air mass thunderstorm to occur |
| June | In what month do we record the most thunderstorm wind events in the U.S.A. ? |
| Florida | Air mass thunderstorms are more common in which of the following U.S. states? |
| multicell | “Training”, heavy continuous rains, multiple thunderstorms passing over an area can be caused by __________ thunderstorms |
| cold | Which type of front is more likely to produce thunderstorm weather? |
| different | Multicell thunderstorms have thunderstorm cells in ____ stage of development? |
| supercell | Which of the following thunderstorms is at its maximum intensity after midnight? |
| wall cloud | Which of the following cloud characteristics is indicative of the mesocyclone at the bottom of the thunderstorm? |
| back portion, bottom of cloud | Which type of mammary (mammatus) clouds might you find associated with the rear-flanking downdraft of a thunderstorm? |
| rotating updraft | The term mesocyclone refers to what in a thunderstorm? |
| mesoscale convective complexes | In which group of thunderstorms are the individual thunderstorms all in the same stage of development |
| parallel, cold | Frontal thunderstorms form _____ to a _____ front. |
| overshooting top | Which of the following cloud characteristics is indicative of a mesocyclone at the top of a thunderstorm ? |
| SW | The mesocyclone of a supercell thunderstorm is most likely found in which sector of the storm? |
| wind shear | The distorted V seen is SRM radar images indicates: |
| mesoscale convective complexes | Super outbreaks of tornadoes are associated with which thunderstorm complexes? |
| negative | The bottom of a cumulonimbus cloud tends to have a _____ charge. |
| graupel and ice crystals | Charge separation in a thunderstorm involves which substances' interactions? |
| positive, top | "Bolts from the blue” are most likely __________ lightning and originates in the __________ of a thundercloud |
| stepped ladder | The first lightning strike to move out of the bottom of a cloud and get within 50 meters of the ground is called |
| positive | The most ‘powerful’ type of lightning based on the distance traveled from a storm would be _____ lightning. |
| negative, intracloud | The most common form of lightning is called |
| positive streamers | Positive charges that stream off of high points at the Earth surface are called: |
| return stroke | In talking about negative lightning, which part of a cloud to ground lightning strike carries the most electrical current? |
| forked | Lightning that shows branches as it flashes in the sky is called: |
| heat | Lightning that is too far away to hear the thunder is called _____ lightning. |
| air pressure | Thunder is caused by rapidly expanding ___ _______ decaying to an acoustic wave |
| 3 | If you see a lightning bolt and hear thunder 15 seconds later, the lightning bolt was _____ miles away from you. |
| same areas | Lightning is more common along the Gulf of Mexico because air mass thunderstorms are more common in the _____ _____ |
| positive streamers | When a negative cloud to ground lightning bolt gets close to the ground, it typically meets the _____ rising up to meet the bolt |
| parts, times | Thunder makes a rumbling noise because sound from different _____ of the lightning bolt reach the hearer at different _____ |
| thunderstorms | The charge separation between the Earth's surface and top of the atmosphere is maintained by _______. |
| negative, intracloud | Sheet lightning is what general type of lightning? |
| 2-3 | In New York State, you have a chance that lightning will strike within a half mile (kilometer) of you at least ____ times per year |
| positive shadow | Charges that follow a thunderstorm because they are attracted to the bottom of a thunderstorms are called: |
| 1-2 cm | A typical lightning stroke is ____ wide at the surface of the Earth. |