University Of Arizona

ATMO 005

Quiz #4

1)The direction of the pressure gradient force (PGF) is ___________________. The direction of the Coriolis force is _________________.

2. Surface winds are blowing from the ocean onshore and are being caused by a thermal circulation. Would winds like this develop during the____________. The land would be _______________than the ocean. Clouds are more likely to form over the ________________.

3. The narrow tilted tornado is probably_____________than the wide tornado.

4. A warm, northward flowing ocean current is found off _____________ of the United States.

5. _________________________

create the electrical charge in thunderstorms needed for lightning.

6. Winds blow across the contour lines on _________________.

7. A stepped leader is a_________ propagating discharge that occurs at the ____________ of a cloud-to-ground lightning discharge.

8. The 1st   law of motion was postulated by ___________

9. In the 3-cell model of the earth’s global circulation you find a belt of ____________ pressure at 30o   N latitude.  The doldrums are a region of____________surface winds. At the equator the surface winds ______________. The trade winds blow from the __________.

10. An air mass thunderstorm will being to weaken and dissipate when _______________.

11. Is a gust front produced by a thunderstorm _________? Does the ring of dust stirred up by the gust front blow_________ away from the center of the storm?

12. Which two of the following forces cause upper level winds to blow like they do?

13. The direction of the initial motion in the figure at the right means that this is a center of ___________ pressure. The bending that occurs after the wind starts to blow indicates that this is a __________ hemisphere weather map.

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14. Would an automobile with a __________ body provide the best protection from lightning. It is _________to use a cell phone during a lightning storm.

15. When an object is moving in a circular path at constant speed the net force __________

16. Match one of the terms at the right with each of the descriptions  below

Rotating thunderstorm updraft                                     

Changing wind speed or direction with distance      Narrow, intense thunderstorm downdraft

(mesocyclone, wind shear, microburst)

17. Is the _____________ force pointing outward in the figure at right. Is the __________ hemisphere map.