The document discusses different types of natural disasters including tornadoes, hurricanes, earthquakes, volcanoes, floods, tsunamis, winter storms, and wildfires. It provides details on the causes and effects of each type of disaster. Tornadoes are rotating funnel-shaped clouds that can produce winds over 300 mph and cause major damage. Hurricanes are massive storms with winds over 75 mph that form in the tropics and produce heavy rain, winds, waves, and tornadoes. Earthquakes result from movements of tectonic plates and cause widespread shaking, especially along fault lines.

1. Natural DisastersNatural Disasters

2. Types of Natural DisastersTypes of Natural Disasters
 TornadoesTornadoes
 HurricanesHurricanes
 EarthquakesEarthquakes
 VolcanoesVolcanoes
 FloodsFloods
 TsunamisTsunamis
 Winter StormsWinter Storms
 WildfiresWildfires

3. TornadoesTornadoes
 Rotating, funnel-shaped clouds from powerfulRotating, funnel-shaped clouds from powerful
thunderstorms.thunderstorms.
 Winds up to 300 MPH capable of producing majorWinds up to 300 MPH capable of producing major
damage.damage.
 More occur in the United States than anywhereMore occur in the United States than anywhere
else in the world; they occur in every state inelse in the world; they occur in every state in
America.America.

4. Effects of TornadoesEffects of Tornadoes
Tuscaloosa County: December 16, 2000Tuscaloosa County: December 16, 2000

5. HurricanesHurricanes
 Massive severe storms occurring in the tropics.Massive severe storms occurring in the tropics.
 Winds greater than 75 MPH.Winds greater than 75 MPH.
 Clouds & winds spin around the eye.Clouds & winds spin around the eye.
 Produce heavy rains, high winds, large waves, andProduce heavy rains, high winds, large waves, and
spin-off tornadoes.spin-off tornadoes.

6. Effects of HurricanesEffects of Hurricanes
Hurricane Frederick - 1979Hurricane Frederick - 1979 Hurricane Ivan 2005Hurricane Ivan 2005

7. EarthquakesEarthquakes
 Shaking caused by movements of plates in theShaking caused by movements of plates in the
earth’s crust.earth’s crust.
 Occur along faults – borders between twoOccur along faults – borders between two
plates.plates.
 Occur most often along theOccur most often along the Ring of FireRing of Fire..

8. Effects of EarthquakesEffects of Earthquakes

9. VolcanoesVolcanoes
 More than 500 active volcanoes in theMore than 500 active volcanoes in the
world; over half in the Ring of Fire.world; over half in the Ring of Fire.
 Pressure builds below the earth’s surfacePressure builds below the earth’s surface
producing eruptions of lava, rock, andproducing eruptions of lava, rock, and
volcanic gases.volcanic gases.

10. Effects of VolcanoesEffects of Volcanoes

11. FloodsFloods
 Result from heavy rains.Result from heavy rains.
 May involve rivers overflowing, stormMay involve rivers overflowing, storm
surge/ocean waves, & dams or leveessurge/ocean waves, & dams or levees
breaking.breaking.
 Most common natural hazard.Most common natural hazard.
 Flashfloods = floods that happen veryFlashfloods = floods that happen very
fast.fast.

12. Effects of FloodsEffects of Floods

13. TsunamisTsunamis
 Form as a result of earthquakes, volcanoes, orForm as a result of earthquakes, volcanoes, or
landsides under the ocean.landsides under the ocean.
 Waves grow taller as they reach the coast.Waves grow taller as they reach the coast.
 Four out of Five occur in the Ring of Fire.Four out of Five occur in the Ring of Fire.
 Over 200,000 people killed in the 12/26/05 IndianOver 200,000 people killed in the 12/26/05 Indian
Ocean tsunami.Ocean tsunami.

14. Effects of TsunamisEffects of Tsunamis
Indian Ocean Tsunami – December 26, 2005Indian Ocean Tsunami – December 26, 2005

15. Winter StormsWinter Storms
 May include snow, ice storms, sleet,May include snow, ice storms, sleet,
freezing rain, and extremely coldfreezing rain, and extremely cold
temperatures.temperatures.
 Most deaths occur in automobiles.Most deaths occur in automobiles.
 Storms may cause widespread powerStorms may cause widespread power
outages.outages.

16. Effects of Winter StormsEffects of Winter Storms

17. WildfiresWildfires
 Occur in forests, grasslands, and woodedOccur in forests, grasslands, and wooded
areas.areas.
 Most common causes: lightning and humanMost common causes: lightning and human
accidents.accidents.
 Burn more than 4 million acres in the U.S.Burn more than 4 million acres in the U.S.
each year.each year.

18. Effects of WildfiresEffects of Wildfires

19. Thank you forThank you for
Watching!Watching!
A Presentation By:A Presentation By:
S.V.KeerthiprithviS.V.Keerthiprithvi
IX-FIX-F
PON VIDYASHRAMPON VIDYASHRAM