C. The wind moves violently. 10. How does the wind move during fair weather? A. The wind moves gently B. The wind blows hard. D. Strong wind 11. How does air temperature affect the weather condition? A. High temperature makes the weather warm. B. Low temperature makes the weather hot C. Low temperature indicates fair weather. D. All of the above 12. What instrument measures the speed of the wind? A. barometer C. thermometer B. anemometer D. All of the above 13 Which of the following instrument determines the direction from which the wind is blowing? A weather C. barorneter B. thermometer D. wind vane 14.It refers to how fast the wind blows. It is usually expressed in kilometer per hour. A. Wind Speed C. Sky Condition B. Wind Direction D. Weather Condition 15.It describes the average fraction of the sky covered by cloud. A. Air Condition C. Sky Condition B. Wind Condition D. Speed Condition