Weather and air masses

9.Which type of air mass would be warm and dry?

10.The greater the pressure difference between two pressure zones, the stronger the wind blows.

11.Which type of front is represented on a weather map by red domes and blue triangles?

12.What type of front brings days of rain, drizzle, and fog?

13.Match each type of air mass with its description.

14.Place the following events in the order they occur as a cold front approaches and passes over a location.

15.Which of the following statements about air pressure are true? (select all that apply)

16.A stationary front may bring days of rain, drizzle, and fog.

17.Which of the following are true about the movement of air masses? (select all that apply)

18.Match each type of front with its characteristic weather.

19.Arrange the following steps in the formation of an occluded front in the correct order.

20.A weather station reports that a warm, moist air mass is moving over a region where the ground is still cold from winter. Which of the following weather conditions is most likely to result?

21.On a weather map, a line with red semicircles on one side and blue triangles on the other side represents a stationary front. What weather is most likely to be associated with this front?

22.A weather balloon measures the air pressure at an altitude of 3 km and finds it to be lower than at sea level. Which of the following best explains this observation?

23.A weather station records a sudden temperature drop, a shift in wind direction, and a line of thunderstorms passing through, followed by clearing skies. Which type of front most likely passed through?

24.The air pressure increased after the front passed because the cold air mass is denser and has higher pressure.

25.A weather station records a steady drop in air pressure over several hours, followed by a sudden temperature drop and a shift in wind direction. Which type of front is most likely passing through?

26.A maritime polar air mass moves over a warm land area in summer. Which of the following weather conditions is most likely to result?

27.In the troposphere, temperature decreases as altitude increases.

28.Which of the following is the correct description of a maritime polar air mass?

29.The greater the temperature difference between two air masses at a front, the weaker the winds will be.

30.Fill in the blank: An air mass that forms over a continent is called a ___ air mass.

31.Fill in the blank: The boundary where two air masses meet is called a ___.

32.Fill in the blank: A cold front is at the leading edge of moving ___ air.

33.On average, how many kilometers thick is the troposphere?

34.What type of air mass forms over a continent near the equator?

35.The temperature at sea level is 16°C. If the temperature in the troposphere decreases by 6.4°C for every kilometer of altitude, what is the temperature at an altitude of 5 km? Give your answer in degrees Celsius.

36.Complete the sentence with the correct term.

37.Explain why a warm front typically brings prolonged, gentle precipitation over a large area, while a cold front often brings intense but short-lived precipitation.

38.Explain why air pressure is lower at higher altitudes.

39.Describe how the temperature changes with altitude in the troposphere, and explain why this leads to cloud formation.

40.Describe how you would use a weather map to predict the arrival of a cold front and the weather changes it will bring.

41.On average, how many kilometers thick is the troposphere?

42.The temperature at sea level is 16°C. If the temperature in the troposphere decreases by 6.4°C for every kilometer of altitude, what is the temperature at an altitude of 5 km? Give your answer in degrees Celsius.

43.The diagram shows a cold, dry air mass moving toward a city that is currently under warm, moist air. Which of the following best describes what will happen in the city as the two air masses meet?

44.A weather station records these conditions over three days: | Day | Sky conditions | High (°F) | Low (°F) | Air pressure (in. Hg) | |---|---|---|---|---| | 1 | rainy | 70 | 55 | 29.72 | | 2 | partly cloudy | 73 | 56 | 30.02 | | 3 | sunny | 79 | 58 | 30.37 | Select the two most likely explanations for this change in weather from Day 1 to Day 3.