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EASA- 107 test #4
December 11, 1998
Answers are in capital letters or have an asterisk next to them.
- 1.
- The only place NOT affected by sea/land breeze is
- a) Michigan
- b) Florida
- c) The Hawaiian Islands
- D) Missouri *
- 2.
- A chinook wind would most likely be found in
- a) Michigan
- b) Florida
- C) Colorado *
- d) Missouri
- 3.
- In both the sea and land breezes, the flow near the surface is
- a) From the warm region to the cold region
- B) From the cold region to the warm region *
- c) From land to ocean
- d) From ocean to land
- 4.
- The height of the sea breeze circulation is about
- a) 10 km
- b) 6 km
- c) 8 km
- D) 1 km *
- 5.
- The two things mainly responsible for local and regional circulations
are
- a) Wind speed and direction
- b) Oceans
- c) Mountains and Land
- D) Differential heating *
- 6.
- For local sea/land breezes the strength and direction of the
flow is mainly determined by
- a) A balance between the pressure gradient and Coriolis forces
- b) The Coriolis force
- C) The pressure gradient force *
- d) None of the above
- 7.
- Chinook winds flow down a mountain forced by
- A) Upper level flow *
- b) The jet stream
- c) The low level jet
- d) Gravity
- 8.
- When a katabatic wind reaches the valley its temperature
- a) Is warmer than the air originally in the valley
- B) Is colder than the air originally in the valley *
- c) Is nearly the same as the air originally in the valley
- d) Is highly unstable and subject to thunderstorm development
- 9.
- The direction of the low-level monsoon circulation during the summer is
- a) Land to sea
- B) Sea to land *
- c) Along the coast line
- d) None of the above
- 10.
- Which of the following are associated with the sea breeze but not the
land breeze
- a) Coastline
- B) Solar Energy *
- c) Difference heat capacities of land and water
- d) All of the above
- 11.
- Which of the following is NOT important for thunderstorm development
- A) Surface divergence *
- b) Moisture
- c) Lifting
- d) Instability
- 12.
- An environment which would enhance thunderstorm development includes
high relative humidity
- a) From the surface to the tropopause
- B) Only near the surface *
- c) Only near the jet stream
- d) From the jet stream to the tropopause
- 13.
- The initial stage of a thunderstorm is called
- a) The convergence stage
- b) The convective stage
- c) The genesis stage
- D) The cumulus stage *
- 14.
- Thunderstorms normally form in
- A) mT air masses *
- b) cP air masses
- c) mP air masses
- d) cT air masses
- 15.
- A gust front is
- A) A miniature cold front formed by the downdraft wind *
- b) A front which passes after a thunderstorm
- c) A cold front which moves in sudden jumps often associated with severe
weather
- d) A rapidly moving stationary front
- 16.
- The anvil of a thunderstorm is normally found
- a) Underneath the updraft
- b) Just below the shelf cloud
- c) Within the wall cloud
- D) Near the tropopause *
- 17.
- Dry air aloft is needed for thunderstorm development because
- a) Dry air is heavier that moist air
- B) The resultant evaporative cooling destabilizes the atmosphere *
- c) The moisture must be lifted from the surface
- d) The jet stream is faster when the air is dry
- 18.
- Of the following which method of lifting air is most likely to occur
in St. Louis
- A) Frontal activity *
- b) Orography (Mountains)
- c) Land breezes
- d) Sea breezes
- 19.
- In class we discussed destabilizing the atmosphere by
- A) Low level warm advection and upper level cold advection *
- b) Low level cold advection
- c) Upper level moisture convergence
- d) Compressional warming
- 20.
- Thunderstorms which develop circulations which reinforce the thunderstorms'
growth are large complex storms known as
- a) Air mass thunderstorms
- b) Frontal thunderstorms
- C) Mesoscale convective systems *
- d) Squall lines
- 21.
- The main purpose of the low level jet in establishing severe
thunderstorms is
- a) To provide the necessary rotation
- b) To counteract the Coriolis force
- C) To provide moisture *
- d) To enhance radiative cooling aloft
- 22.
- In St. Louis, the isolated thunderstorms that "pop-up" late in the
day during August are most likely
- A) Single cell thunderstorms *
- b) Frontal thunderstorms
- c) Mesoscale convective systems
- d) Squall lines
- 23.
- Most thunderstorms in the Midwest are known as ``right movers'',
meaning that
- a) The storms curve to the right due to the Coriolis force
- B) The storms move to the right of the cell motion *
- c) The storms veer to the right of the jet stream
- d) The storms develop to the right of the low level jet
- 24.
- A lightning strike is
- A) The flow of electricity through the atmosphere *
- b) The collision of ionized water
- c) The vaporization of supercooled water
- d) A plasma induced shock wave
- 25.
- The charge separation occurring in thunderstorms is due to
- a) The north and south poles of the earth
- b) The ions in the Ionosphere
- C) The collisions of ice and water in the cloud *
- d) The supersaturation of hydroscopic nuclei
- 26.
- When comparing common household electricity with a lightning bolt,
which of the following is true
- a) The household voltage is much larger than with lightning
- b) The household current is much smaller than with lightning
- C) The household voltage is much smaller than with lightning *
- d) None of the above
- 27.
- The formation of tornadoes typically requires a severe thunderstorm
which includes
- a) Lightning
- b) A dry line
- c) A vortex cloud
- D) Rotation *
- 28.
- The band of clouds which extend below the cloud base and
commonly surround a tornado is known as
- a) The shelf cloud
- b) The roll cloud
- C) The wall cloud *
- d) The vortex cloud
- 29.
- The larger rotation in which the tornado is embedded is know as
- a) The cyclone vortex
- b) The suction vortex
- C) The mesocyclone *
- d) The typhoon
- 30.
- The scale of tornado intensity is known as
- a) The Saffir-Simpson scale
- B) The Fujita scale *
- c) The GEO scale
- d) The Vortex scale
- 31.
- The initial rotation of a hurricane is due to
- a) The centripetal force
- B) The Coriolis force *
- c) The pressure gradient force
- d) Friction
- 32.
- A typical size (diameter) of a hurricane is
- a) 10 km
- b) 50 km
- C) 500 km *
- d) 5000 km
- 33.
- The strongest winds in a hurricane are
- a) In the eye
- b) East of the largest rain bands
- C) In the eye wall *
- d) Over the warmest waters
- 34.
- Hurricanes mainly intensify through
- A) Latent heating *
- b) Evaporative cooling
- c) Radiational heating
- d) Compressional warming
- 35.
- The greatest damage done by a hurricane is normally due to
- a) Tornadoes
- b) Lightning
- c) Winds
- D) Storm surge *
- 36.
- There will not be another hurricane Andrew because
- a) The next devastating hurricane will begin with the letter B
- b) The name Andrew is used only once
- c) Andrew has been used 6 times, after that the named is not used again
- D) Devastating hurricanes have their names retired *
- 37.
- The most violent weather within a hurricane is found
- a) In the eye
- b) In the outer most rainband
- C) In the eye wall *
- d) Along the western edge
- 38.
- The rainfall associated with hurricanes is found
- a) Uniformly throughout the hurricane
- b) Decreases as you move toward the eye
- C) In spiral bands *
- d) Only over the northwest corner of the hurricane
- 39.
- The second stage of hurricane development is known as
- a) A easterly wave
- B) A tropical depression *
- c) A tropical storm
- d) A Kelvin wave
- 40.
- In your final assignment, hurricane Mitch was found to weaken
- a) Just after the eye pasted over Honduras
- b) Just south of Florida
- c) Just before landfall
- D) Just after landfall *
- 41.
- The scale of motion which deals with thunderstorms is:
- a) Global
- b) Synoptic
- C) Mesoscale *
- d) Microscale
- 42.
- The scale of motion which deals with low pressure systems is:
- a) Global
- B) Synoptic *
- c) Mesoscale
- d) Microscale
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Dr. Charles Graves
2000-12-04