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STORMS & PRECIPITATION

Learn about different types of storms like thunderstorms, tornadoes, snowstorms, and hurricanes. Understand how they form, their impacts, and the various forms of precipitation they bring. From lightning to blizzards, unravel the science behind these natural phenomena.

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STORMS & PRECIPITATION

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  1. STORMS & PRECIPITATION S6E4

  2. Types of Storms: • Thunderstorm • Tornado • Snowstorm • Hurricane

  3. Watch a Brainpop on Thunderstorms! • http://www.brainpop.com/science/weather/thunderstorms/

  4. ThunderstormWhat is it? Small storm with heavy precipitation, frequent thunder & lightning

  5. ThunderstormHow does it form? • When warm air is forced upward along a cold front & warm, humid air rises rapidly • In Cumulonimbus clouds (dark, anvil-shaped) • During Spring/Summer

  6. Go to the Online Textbook… • Watch Active Art…Ch 12…weather fronts • http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/index.html

  7. Thunderstorm rolling in over the city

  8. During a thunderstorm, which comes 1stlightning or thunder? LIGHTNINGMCQUEEN IS #1! Thunder always follows LIGHTNING…

  9. Watch a Brainpop on Tornadoes! • http://www.brainpop.com/science/weather/tornadoes/

  10. TornadoWhat is it? • Rapidly whirling, funnel-shaped cloud, reaching from the storm cloud to the ground • Brief, but deadly!

  11. TornadoHow does it form? • In cumulonimbus clouds with winds at different heights • In summer/spring

  12. Tornado Alley • as warm, moist air from the Gulf of Mexico meets cold, dry air from Canada • 800 or more tornadoes yearly in this area

  13. Watch a Brainpop on Snowstorms! • http://www.brainpop.com/science/weather/snowflakes/ • http://ed.ted.com/lessons/the-science-of-snowflakes-marusa-bradac#watch

  14. SnowstormWhat is it? • Heavy snowfalls that block roads • Trap people in their cars/homes • Blowing wind make people lose their way

  15. Blinding snow can disorient people

  16. SnowstormHow does it form? • Extreme cold • Air colder than 32°F ALL the way to the ground

  17. Watch a Brainpop on Hurricanes! • http://www.brainpop.com/science/weather/hurricanes/

  18. HurricaneWhat is it? • A tropical cyclone • Winds 119 km/hr or higher • May be 600 km wide

  19. Hurricane • Forms in the Atlantic, Pacific & Indian Oceans • Called a Typhoon in the western Pacific • Hurricane Season in U.S. from July - Nov • Eye (center) is calm

  20. HurricaneHow does it form? • Begins over warm ocean water as a tropical depression  tropical storm  hurricane • Last ≥ 1 week • Loses strength as it crosses land • no water = no hurricane

  21. Storms bring precipitation…

  22. 5 Types of Precipitation • Rain • Hail • Snow • Sleet • Freezing Rain Depend on the temps!

  23. Rain • Drizzle • Mist • Large drops • Falls when the temps are above freezing (32°F)

  24. Hail • Round pellets tossed around in cumulonimbus clouds like a rock tumbler • During thunderstorms • Forms at any temp

  25. Snow • Powdery snow falls through cold, dry air • Clumps together as it falls through humid (wet) air • Temps below freezing • Water vapor in clouds made directly into ice crystals  SNOW!

  26. Sleet • Raindrops that fall through air that is below freezing point of water (32°F)

  27. Freezing Rain • Happens a lot in GA in the winter! • Raindrops fall through cold air, then freeze as they hit frozen surfaces

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