1.5 Air Pressure_Ch10_L6


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1.5 Air Pressure_Ch10_L6

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