7. What is the wind speed and wind direction shown by the wind barb above? 12 kn

Question

7. What is the wind speed and wind direction shown by the wind barb above? 12 knots; southwesterly 12 knots; northeasterly 25 knots; southwesterly 25 knots; northeasterly a. b. c. d. 8. True/False: The Coriolis and friction forces do not exist when the wind speed is 0 m/s a. True b. False 9 What two forces are equal and opposite when the atmosphere is in geostrophic balance? a. b. c. d. Pressure gradient force and gravity force Coriolis force and friction force Pressure gradient force and friction force Pressure gradient force and Coriolis force

Explanation / Answer

7. Question is incomplete

8. Answer is false. Coriolis force depends only on the direction of the wind and not on the speed of the wind. The coriolis force is zero at the equator and maximum at poles. So, coriolis force does not change according to the speed of the wind

9. Answer is option D, Pressure gradient force and coriolis force

Atmosphere is said to be in geostrophic balance when PGF and Coriolis force are equal and opposite

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