6th grade ch. 2 sec. 5 precipitation

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6th grade ch. 2 sec. 5 precipitation

  1. 1. CH. 2 SEC. 5 PRECIPITATION
  2. 2. precipitation <ul><li>any form of water that falls from clouds & reaches Earth’s surface </li></ul><ul><li>cloud droplets or ice crystals must grow heavy enough to fall thru air </li></ul>
  3. 3. Types of precipitation <ul><li>Rain </li></ul><ul><li>Sleet </li></ul><ul><li>Freezing rain </li></ul><ul><li>Hail </li></ul><ul><li>Snow </li></ul>
  4. 4. rain <ul><li>most common type of precipitation </li></ul><ul><li>at least 0.5 mm in diameter </li></ul>
  5. 5. mist (drizzle) <ul><li>< 0.5 mm </li></ul><ul><ul><li>fall from stratus clouds </li></ul></ul>
  6. 6. sleet <ul><li>When raindrops freeze as they fall </li></ul><ul><li>< 0.5 mm in diameter </li></ul>
  7. 7. freezing rain <ul><li>When raindrops freeze when they touch a cold surface </li></ul>
  8. 9. hail <ul><li>Round pellets of ice </li></ul><ul><li>> 5 mm in diameter </li></ul><ul><li>Form only in cumulonimbus clouds during thunderstorms </li></ul>
  9. 11. hail
  10. 14. snow <ul><li>water vapor converts directly into ice crystals </li></ul><ul><li>6 sides </li></ul>
  11. 17. precipitation measured w/ rain gauge = <ul><ul><li>open ended can or tube that collects rainfall </li></ul></ul>
  12. 18. Snowfall measured by: <ul><li>using a ruler or </li></ul><ul><li>melting collected snow & measuring depth of water it makes </li></ul>
  13. 19. drought <ul><li>long period of unusually low precipitation </li></ul>
  14. 20. Drought damaged lawn in Nebraska

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