Catastrophic Events

1. Catastrophic Events Henry Millican Josh Bryant help!

2. Mind Map ofCatastrophic Events Flooding Tsunami Drought Thunderstorm Catastrophic Events Forest fire Hurricane Volcano Tornado Wind storm Dust Devil Earthquake

3. Tornado Formation

4. Tornadoes • Tornadoes occur in the central and southern U.S., where warm, humid air from the Gulf of Mexico collides with cool, dry air from the Rockies and Canada. • Tornadoes are usually transparent until they pick up dust and dirt • Tornadoes can have a wind speed of 250 mph or more • Tornadoes can also travel at 30 mph -70 mph

5. Earthquake

6. Volcanoes • Volcano • 1. Magma chamber • 2. Country rock • 3. Conduit (pipe) • 4. Base • 5. Sill • 6. Branch pipe • 7. Layers of ash emitted by the volcano • 8. Flank • 9. Layers of lava emitted by the volcano • 10. Throat • 11. Parasitic cone • 12. Lava flow • 13. Vent • 14. Crater • 15. Ash cloud

7. Tsunamis • Tsunamis are usually made by earthquakes • Tsunamis can become over 50 feet tall • The Boxing Day Tsunami in 2004 caused approx. 350,000 deaths and many more injuries.

8. Forest Fire • There are three major kinds of forest fires. • Surface fires typically burn rapidly at a low intensity and consume light fuels while presenting little danger to mature trees and root systems. • Crown fires generally result from ground fires and occur in the upper sections of trees, which can cause embers and branches to fall and spread the fire. • Ground fires are the most infrequent type of fire and are very intense blazes that destroy all vegetation and organic manner, leaving only bare earth. These largest fires actually create their own winds and weather, increasing the flow of oxygen and "feeding" the fire.

9. Hurricane • Hurricanes most commonly appear on the East southern coast. • Cold unstable air above and warm tropical air leads to Hurricanes. • Hurricanes can last up to 3 weeks at a time. • Hurricane wind can range from a category one 74 mph to a category five 156+ mph