Meteorology. Chapter 10 Worksheet 2

Transcription

1 Chapter 10 Worksheet 2 Meteorology Name: Circle the letter that corresponds to the correct answer 1) Downdrafts totally dominate the in the development of a thunderstorm. a) dissipating stage b) mature stage c) cumulus stage 2) This type of cloud brings thunderstorms. a) cumulus b) altostratus c) nimbostratus d) stratocumulus e) cumulonimbus 3) About what percent of thunderstorms in the United States become severe? a) 10% b) 20% c) 25% d) 50% 4) Thunderstorm tops most likely occur: a) in the lower troposphere. b) in the middle stratosphere. c) in the mesosphere. d) near the tropopause. 5) An overshooting top means that: a) a thunderstorm will definitely produce a tornado b) the thunderstorm has very strong updrafts causing the cloud to grow into the stratosphere c) the thunderstorm is dissipating. d) lightning strikes will be especially intense.

2 Refer to the diagram of a thunderstorm above to answer the following questions. 6) Where would you expect to find precipitation occurring in this thunderstorm? a) Letter A b) Letter B c) Letter D d) Letter E 7) The feature identified by Letter F is: a) a mammatus cloud b) a feature marking the downdraft c) an overshooting top d) a roll cloud 8) The feature identified by Letter F is most likely: a) the beginning of a new thunderstorm cell b) the sign of an intense downdraft c) in the mesosphere d) in the stratosphere 9) The feature identified by Letter D is: a) the gust front b) a cold front c) the storm's anvil d) experiencing very calm conditions 10) Where in the thunderstorm would you be most likely to find mammatus clouds? a) Letter C b) Letter D c) Letter E d) Letter F 11) Which feature of the thunderstorm is created by the gust front? a) Letter A b) Letter D c) Letter C d) Letter F 12) Some of the most dangerous weather is produced by a type of thunderstorm called a(n): a) gust front. b) updraft. c) roll cloud. d) supercell.

3 13) The gust front occurs: a) during the development of thunderstorm clouds. b) near the anvil part of a thunderstorm cloud. c) at the leading edge of a thunderstorm downdraft. d) on the lee shore of the Great Lakes. 14) A roll cloud forms in association with which other common thunderstorm feature? a) the precipitation b) the anvil c) the updraft d) the gust front 15) The leading edge of a gust front is frequently associated with: a) heavy precipitation. b) the development of a new cumulonimbus cloud. c) tornadoes. d) hail. 16) What does the term mesocyclone refer to in reference to a tornado? a) the rotation of the updraft in the parent thunderstorm b) a high altitude tornado c) a false alarm tornado warning d) a very large tornado 17) are relatively narrow, elongated bands of thunderstorms that develop in the warm sector of a middle latitude cyclone, usually in advance of a cold front. a) Roll clouds b) Mesocyclones c) Squall lines d) Supercells 18) A squall line is most likely to develop where? a) in the middle of a cp air mass b) along a warm front c) along a cold front d) along a dryline in the warm sector of a mid latitude cyclone 19) Over the last 30 years, which of these has caused the FEWEST weather related deaths on average in the U.S.? a) lightning b) hurricanes c) tornadoes d) floods 20) The greatest number of deaths associated with thunderstorms result from: a) flash flooding. b) lightning. c) hail. d) tornadoes.

4 21) Hurricanes and thunderstorms can sometimes cause local floods that are short lived but high volume. These are called: a) rapid floods b) flash floods c) 100 year floods d) surge floods 22) A dryline generally forms between which two air masses? a) mp and mt b) cp and ct c) ct and mt d) cp and mt 23) Drylines are capable of producing thunderstorms because: a) the dry air mass forces the moist air mass to rise. b) the moist air mass lifts the dry air mass. c) there is an abrupt change in temperature across the dryline. d) the dry air mass is unstable and rising. 24) In the United States, a mesoscale convective complex is most likely to develop in: a) the Great Plains. b) the Pacific Northwest. c) New England. d) the Gulf of Mexico. Circle T if the statement is true or F if the statement is false T F 25. Squall lines are easily recognized because of their unique nimbostratus clouds. T F 26. Divergence in the upper level jet stream hinders the formation of severe thunderstorms. T F 27. A squall line with severe thunderstorms can also form along a boundary called a dryline, a narrow zone along which there is an abrupt change in moisture. T F 28. It is generally considered safe to talk on the phone during a lightning storm, as long as it is a corded telephone. T F 29. An airplane flown by an untrained pilot is likely to crash if it flies through a downburst. T F 30. Lightning only occurs under the central part of a thunderstorm cloud. T F 31. Lightning always occurs between a cloud and the ground. T F 32. Cloud to ground lightning results in a flow of electrons from the ground to the cloud T F 33. Thunder generates lightning. T F 34. A long lightning flash at some distance from the observer produces the thunder we hear as a rumble. T F 35. The primary force causing the fast winds of a tornado is electrical. T F 36. A developing tornado is called a funnel cloud until it makes contact with the surface.

5 Answer the following questions 37. Name the two air mass types most likely to be involved when severe thunderstorms occur. 38. How are both positively and negatively charged particles able to form in the same thunderstorm cloud? 39. Why is so called 'heat lightning' not associated with thunder?