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pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
pd 4 group 6
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pd 4 group 6

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Transcript

  • 1. Severe weather Thunderstorms Thunderstorm Damage Lightning And Thunder Tornadoes Hurricanes Blizzards Severe Weather Safety
  • 2. Severe Weather
    • Severe weather poses danger to people, structures, and animals.
  • 3. Thunderstorms
    • Heavy rains, Lightning Flashes, Thunder Roars, And Hail falls during a thunder storm.
    • When rising air, water vapor condenses into water droplets or ice crystals.
    • Warm, moist air can be forced upward where it cools and condensation occurs, forming cumulonimbus clouds.
  • 4. Thunderstorm Damage
    • Thunderstorms can stall over a region, causing rain to fall heavily for a period of time.
    • Strong winds can cause damage.
    • Hail from a thunderstorm can dent cars and aluminum siding on houses.
  • 5. Lightning and Thunder
    • A typical bolt of lightning can immediately heat the air to between 15,000 to 60,000 degrees Fahrenheit. (That's hotter than the surface of the sun!)
    • It's that explosion of air that creates sound waves, which we hear and call thunder.
    • Lightning always produces thunder.
  • 6. Tornadoes
    • Some of the most severe thunderstorms produce tornadoes.
    • A violent, whirling wind that moves in a narrow path over land.
    • A tornadoes' destructive winds can rip apart buildings and uproot trees.
  • 7. Hurricanes
    • The most powerful storm.
    • A large, swirling, low-pressure system that forms over the warm Atlantic ocean.
    • Hurricanes can destroy crops, demolish buildings, and kill people and other animals.
  • 8. Blizzards
    • If the winds are 56 km/h, the temperature is low, the visibility is less than 400 m in falling or blowing snow, and if these conditions persist for three or more hours.
    • Occurs in the winter.
  • 9. Severe Weather Safety
    • Take cover inside thunderstorms.
    • Listen to the tornado watch and the warnings and go to a shelter.
    • Go to a hurricane center.
    • Listen to the weather coverage on news and prepare for anything.
    • For lightning, just stay indoors
  • 10. Resources
    • Earth Science Book
    • http://weathereye.kgan.com/cadet/lightning/thunder.html
    • http://weather.gov/om/winter/index.shtml
    • http://december212012.com

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