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1.5 Air Pressure_Ch10_L6


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  • 1. Air Pressure and Wind pgs. D52-D63 Chapter 10 Lesson 6
  • 2. 1. wind
    • Air that moves horizontally and just over the ground.
    • The flow of air
  • 3. 2. convection cell
    • A part of the atmosphere where air moves in a circular pattern because of unequal heating and cooling.
    • Also, it is a pattern of air rising, sinking, and blowing horizontally
  • 4. 3. sea breeze
    • A wind that blows from the sea to the land
  • 5. 4. land breeze
    • Air blown from land toward the water.
  • 6. 5. Coriolis effect
    • Makes the wind curve to the right in the Northern Hemisphere
    • Causes winds to blow to curve to the left in the Southern Hemisphere.
  • 7. 6. Winds that effect the United States. prevailing westerlies
    • these winds blow from the west to the east
    • they effect the United States and us (North Carolinians)
    • effects places located between 30 N and 60 N (latitude and longitude of the United States)
    • Why are they important?
      • they carry the warm, waters and winds to the western coasts of continents
      • very variable (changing) and produce stormy weather
    United States is here West East California to North Carolina
  • 8. 7. What can get in the way of the prevailing westerlies?
    • Mountains
    • Cities/buildings
    • Trees/forests
    • Which way do you think prevailing easterlies blow?
  • 9. 8. isobar
    • A line on a map connecting places with equal air pressure
  • 10. 9. air pressure
    • As elevation increases, air pressure decreases.
    • As you get higher in altitude, air pressure decreases.
  • 11. 10. updraft
    • Air that rises
  • 12. Review: humidity
    • Amount of moisture in the air
    • Relative humidity is a comparison between how much water vapor is in the air and how much the air can hold.
  • 13.
    • When temperatures vary from location to location, which weather condition plays a role in creating winds when it also changes?
    • A) humidity
    • B) air pressure
    • C) cloud over
    • D) precipitation
    • What causes differences in air pressure?
    • A) clouds
    • B) lightning
    • C) pollution
    • D) temperature
  • 14. A student observes the changes in the pressure and temperature in a region, as shown in the table.
    • What is the most appropriate prediction about the approaching weather for this region?
    • calm
    • cold
    • fair
    • stormy
    Time Pressure (millibar) Temperature (F) 9 a.m. 996 87 10 a.m. 992 88 11 a.m. 990 89 12 p.m. 985 92
  • 15. The diagram represents the atmospheric conditions at a certain location.
    • In which direction will the wind most likely blow from point X?
    • down
    • left
    • right
    • up
    Up Left Right Down Cold Air Warm Air High Pressure Low Pressure X