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5. Back Weather which follows a typical storm track near NYS will move in which direction? Ques. #1 Towards the northeast Ans.

6. Which way does air circulate around a high pressure center in the northern hemisphere? Back Ques. #2 Ans. Clockwise and away from the center

7. Of the 5 air masses listed on page 13 of the reference tables, which one is associated with the lowest pressure? Back Ques. #3 Ans. mT - maritime tropical

8. Name any three factors that affect the rate of evaporation of water. Back Ques. #4 Ans. Surface area, temperature, wind, relative humidity

9. What name is given to a line on a weather map which connects all points of equal barometric pressure? Back Ques. #5 Ans. Isobar

10. Which weather instrument measures wind speed? Back Ques. #6 Anemometer Ans.

11. If the air temperature is 8°C and the wet bulb temperature is 3°C, what is the dewpoint temperature? Back Ques. #7 Ans. -5°C

12. Which diagram below correctly shows the direction of air flow on a warm summer afternoon? Back Ques. #8 Ans. #1 1 2 3 4

13. The air pressure is 29.62 inches. What number should represent pressure on a station model of this location? Back Ques. #9 Ans. 030

14. Which letter represents transpiration? Ques. #10 Back Ans. C

15. What is the air pressure, in inches, at this location? Back Ques. #11 Ans. About 29.58 inches

16. At which city is it most likely raining? Back Ques. #12 Ans. City B

17. On which day was the relative humidity highest? Back Ques. #13 Ans. Tuesday

18. What is the relative humidity at location B? Back Ques. #14 Ans. 72%

19. In order for water vapor to condense into clouds the relative humidity must be 100% and...................... Back Ques. #15 Ans. There must be condensation nuclei present

20. What is the air pressure at location B in inches of Hg? Back Ques. #16 Ans. 30.00 inches

21. What is the temperature in °F at an altitude of 50 km? Back Ques. #17 Ans. 32°F

22. Back Ques. #18 Ans. Clouds are water and all the water is in the troposphere Using the ‘atmosphere graphs’ on page 14 of the reference tables, explain why there are usually no clouds in the stratosphere.

23. Back Ques. #19 Ans. mT Which air mass symbols (page 13 of the reference tables) would correctly represent the air mass currently over Charleston on the map?

24. What determines the characteristics of an air mass? Back Ques. #20 Ans. The region over which it formed: Land = dry (continental), Sea = moist (maritime) Warm region = T (Tropical). Cold = P or A (Polar or Arctic)

25. What are the characteristics of high pressure air masses. Back Ques. #21 Ans. Cool, dry air

26. What determines wind speed? Back Ques. #22 Ans. The pressure gradient

27. What is the relative humidity at this location? Back Ques. #23 Ans. 100%

28. Back Ques. #24 Ans. Rain, followed by clearing and cooler temperatures. Based on your knowledge of earth science and the map (left), make a pre- diction about the weather at location E for the next 24 hours.

29. 2 part question: a) describe the air mass characteristics of this storm and b) describe the circulation of winds around the center. Back Ques. #25 Ans. a) mT (warm and moist) b) Counterclockwise and towards the center

30. According to the reference tables, what is the direction of the prevailing winds at 25° N. latitude? Back Ques. #26 Ans. From the northeast

31. At sea level the air pressure is 1 atmosphere (atm). What is the equivalent pressure in inches (of mercury)? Back Ques. #27 Ans. 29.92 inches

32. What is the wind speed and direction at this location? Back Ques. #28 Ans. 35 knots from the northwest

33. If the present trend continues, describe the weather for this location for Saturday. Back Ques. #29 Ans. Hot, very humid with probable rain.

34. Why do air currents blowing over the surface of the earth always curve? Back Ques. #30 Ans. Due to the earth’s rotation - The Coriolis effect

35. YOU’RE A WINNER! A barometer may record pressure in inches of mercury.