8th Science CC 1 Word Scramble
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Question | Answer |
Thunderstorms | Localized storms involving lightning, thunder, strong winds, heavy rains, and sometimes hail or tornadoes |
Stable | The air is this when currents of rising air are stopped by adiabatic cooling and thus do not rise to great altitudes |
Unstable | The air is this when warm air is near the ground but there is very cool air at higher altitudes |
Cumulus stage | The stage of a thunderstorm in which ice crystals and super-cooled water droplets begin to develop |
Mature stage | During which the thunderstorm reaches the peak of its strength (the beginning is marked by the arrival of precipitation) |
Downdrafts | Concentrated blasts of cool wind that originate from strong, localized downdrafts |
Microbursts | The smallest, most intense downbursts |
Dissipating stage | In which the clouds begin to evaporate because it's power supply is cut off |
Cell | Updraft system |
Single-cell thunderstorm | A thunderstorm containing one cell |
Multiple-cell thunderstorm | Thunderstorms with more than one cell |
Squall line | A multiple-cell thunderstorm that is a long line of advancing thunderstorms usually moving ahead of a cold front |
Supercell | The most powerful type of thunderstorm; it is single-celled |
Lightning | An abrupt discharge of electricity through the air that produces a quick flash of bright light |
Stepped leader | An electron stream |
The positive charge on the ground, attracted by the approaching stepped leader, launches upward in a(n) ___ ___ that rises to meet the stepped leader. | positive streamer |
Return stroke | The upward flow of positive charge that forms the flash of light that can be seen |
Dart leader | A second leader that travels down the channel of the first strike |
Thunder | A shock wave of sound |
___ ___-___-___ lightning is lightning in which the stepped leader travels from a negative region of the cloud down to the ground. | Negative cloud-to-ground lightning |
___ ___-___-____ occurs when a stepped leader begins from the cloud's positively charged upper region. | Positive cloud-to-ground lightning |
___ ___ is lightning that usually causes objects it strikes to catch on fire. | Hot lightning |
Lightning can also strike ___-___-___, although this type of lightning does not occur frequently. | ground-to-cloud |
30-30 rule | A principle says if there are 30 seconds or less between seeing lightning strike and hearing thunder, stay in a safe place until there has been no thunder for at least 30 minutes |
___-___-___ lightning occurs between two clouds or between positive and negative sections of the same cloud. | Cloud-to-cloud |
___ ___ is a rare phenomenon that consists of a small sphere of electricity that seems to float in the air for several seconds. | Ball lightning |
Tornado | A narrow funnel of powerful, rapidly whirling wind that stretches from a cloud to the goround |
Common names for tornadoes are ___ or ___, although to a meteorologist a ___ refers to any low-pressure system in which winds rotate in a direction caused by the Coriolis effect. | twisters, cyclones, cyclone |
The most powerful tornadoes are believed to form from the ___ ___ found in many super-cell thunderstorms. | rotating updrafts |
Mesocyclone | A rotating updraft |
When an inner region of rotating air reaches the ground, it becomes a what? | tornado |
Wall cloud | A large, rotating cylindrical extension form the base of the supercell |
Condensation funnel | The most distinctive visual feature of a tornado |
Tornado Alley | The Mississippi Valley and eastern Great Plains of the United States |
The ___ ___ classifies tornadoes based on intensity and area. | Fujita scale |
Enhanced Fujita Scale | The scale currently used to rank tornado intensity |
Waterspout | A tornado that forms over water |
Dust devil | A dust devil is like a tornado but a dust devil starts on the ground and is not associated with a cloud |
Tornado warning | Means a tornado has been reported or favorable winds for a tornado have been spotted on a weather radar |
Created by:
nelsonclan
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