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Natural Disasters

Natural Disasters. In the water. Hurricanes. In the Northern hemisphere, hurricanes spin counter clockwise, but the move clockwise. (In the Southern Hemisphere, it’s the opposite!) The center of the hurricane is the eye. The eye is the most calm area of the hurricane.

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Natural Disasters

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  1. Natural Disasters In the water

  2. Hurricanes • In the Northern hemisphere, hurricanes spin counter clockwise, but the move clockwise. (In the Southern Hemisphere, it’s the opposite!) • The center of the hurricane is the eye. • The eye is the most calm area of the hurricane. • The walls just outside of the eye have the highest wind speed and cause the most damage.

  3. Hurricanes (continued) • The worst hurricane to hit the United States was Hurricane Katrina in 2005. • Estimates of repairs were around 10.5 billion dollars! • Because of the high wind speed and a slower moving hurricane, the hurricane stayed over one spot for a long period of time, and destroyed much of the buildings that were in its way.

  4. Tsunamis • Tsunamis are triggered by other natural disasters. (Earthquakes, landslides, bolide impacts) • Scientists found a huge tsunami occurrence in Alaska in 1958 • A landslide caused a huge wave to move 200 miles per hour, and it was 1700 feet tall. • It wiped out trees as high as 524 feet high in the mountains around Lituya Bay.

  5. Tsunamis (continued) • A sign that a tsunami is about to occur is that the tide will quickly draw out. • Usually the 2nd or 3rd wave is the biggest. • The most dangerous part about a tsunami isn’t the wave… it’s the rushing debris. • Tsunamis can usually destroy an entire shoreline.

  6. Rogue Waves • Rogue waves are at least twice the height of normal waves. • Unlike tsunamis, rogue waves only affect ships out at sea, and the shoreline is safe. • Rogue waves can also occur in the Great Lakes.

  7. Rogue Waves (continued) • No one is positive about why these waves occur. • The shape of the coast or seabed directs little waves into one area, and they can form one big wave. • As wind blows into the ocean, energy is transferred from the air to the water. • A non-linear wave sucks energy from other waves, and continues to grow.

  8. What direction do hurricanes travel? • Clockwise • Counter Clockwise • To the east • To the west • Depends where you live

  9. Correct The direction that hurricanes travel in is different in each hemisphere.

  10. Incorrect Hit the back button and try again.

  11. GREAT JOB!!!

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