Natural Disasters Aim How can we examine Natural

  • Slides: 14
Download presentation
Natural Disasters Aim: How can we examine Natural Disasters?

Natural Disasters Aim: How can we examine Natural Disasters?

Disaster Database • • Avalanche Earthquakes Hurricanes Landslides Thunderstorms Tornados Tsunami • Resources Volcanoes

Disaster Database • • Avalanche Earthquakes Hurricanes Landslides Thunderstorms Tornados Tsunami • Resources Volcanoes • Concept Map • About the Author Quit

Avalanches • Avalanches Happen on every continent • Avalanche Season is during the “winter

Avalanches • Avalanches Happen on every continent • Avalanche Season is during the “winter time” or December-April in the United States • A large scale can release up to 300, 000 cubic yards of snow • Avalanches are more commonly released by Click on Image for recreationists than by natural causes An Avalanche Video • The biggest factor of avalanche possibility is the accumulation snow over the winter season – More snow = bigger avalanche Quit

Earthquakes • Earthquakes are caused by the release of built up pressure caused by

Earthquakes • Earthquakes are caused by the release of built up pressure caused by the shifting of tectonic plates • Earthquakes usually occur on fault lines, or areas where tectonic plates meet • The size of an earthquake is measured using the logarithmic based Richter scale Quit An aerial view of the San Andreas fault in the Carrizo Plain, Central California

Hurricanes • A hurricane is a tropical storm with winds over 74 mph •

Hurricanes • A hurricane is a tropical storm with winds over 74 mph • Hurricanes occupy the most intense level of the three levels of tropical storms • Hurricanes rotate or circulate counter-clockwise in the northern hemisphere • Hurricanes can only occur over the Atlantic ocean, Caribbean sea, and gulf of Mexico Quit View of a Hurricane from Space

Landslides • Landslides are the movement of land down a slope by gravity •

Landslides • Landslides are the movement of land down a slope by gravity • Landslides are mother nature’s way of redistributing land • They can be triggered by rain, floods, and earthquakes as well as manmade factors such as slope grading or mining • Landslides have the potential to happen anywhere a steep slope is present Quit

Thunder Storms • Every Thunderstorm produces lightning • There is wet thunder and dry

Thunder Storms • Every Thunderstorm produces lightning • There is wet thunder and dry thunder, the difference being whether or not rain in produced • Warm humid conditions favor thunderstorms • Only 10% of thunderstorms are classified as severe • Your chance of being struck by lightning is 1 in 600, 000 Quit Multiple Lightning Strikes and a Supercell Thunderstorm formation

Tornados • A tornado is defined as a violently rotating column of air extending

Tornados • A tornado is defined as a violently rotating column of air extending from a thunderstorm to the ground • Tornados are found in almost every part of the world • Tornados are most common in the United States, just east of the Rocky Mountains in an area called Tornado Ally • Waterspouts are weak tornados over water and can move inland become tornados Quit Click on Image to View a Tornado Chaser’s Video

Tsunamis • On the seafloor, volcanic eruptions, earthquakes, and even landslides can lead to

Tsunamis • On the seafloor, volcanic eruptions, earthquakes, and even landslides can lead to tsunamis • Tsunamis can travel over 300 mph • Tsunamis can have an amplitude of up to 32 ft • Hawaii is the most vulnerable place in the world for tsunamis Quit Click On Image To view Some Tsunami Footage

Volcanoes • Volcanoes are lava filled mountains that erupt when the pressure becomes to

Volcanoes • Volcanoes are lava filled mountains that erupt when the pressure becomes to great for them to hold it inside • The contents that a volcano spews forth is called magma when it’s below the surface and lava once it reaches the surface • Only a fraction of the world’s volcanoes are actually on land, the rest are on the ocean floor • Indonesia has the most volcanoes of all the countries in the world Quit

Quit

Quit

Resources INFO • http: //nsidc. org/snow/avalanche/ • http: //pubs. usgs. gov/gip/earthq 1/ • http:

Resources INFO • http: //nsidc. org/snow/avalanche/ • http: //pubs. usgs. gov/gip/earthq 1/ • http: //www. nhc. noaa. gov/HAW 2/english/basics. shtml • http: //www. fema. gov/hazard/thunderstorm/index. shtm • http: //www. nssl. noaa. gov/edu/safety/tornadoguide. html • http: //www. honolulu. gov/ocda/tsunami. htm • http: //www 2. scholastic. com/browse/article. jsp? id=4886 • http: //www. ussartf. org/landslides. htm IMAGES • http: //bp 2. blogger. com/_6 Y-NXZm. Dcx. U/R 00 Bl. I_HOCI/AAAAAbk/BQb-y 1 g. OOag/s 1600 -h/tornado_lightning. jpg • http: //environmentdebate. files. wordpress. com/2007/04/extreme-weather. jpg • http: //theconservativemanifesto. blogtownhall. com/2008/01 • http: //www. floridalightning. com/files/Supercell_Thunderstorm. jpg • http: //www. thelmagazine. com/lmag_blog/files/Images/lightning. jpg • http: //rumela. com/travel/paricutin_volcano_index. htm • http: //current. com/items/88903589_colombian_volcano_erupts_thousands_flee • http: //blog. lib. umn. edu/salwa 002/architecture/ • http: //www. destination 360. com/central-america/costa-rica/arenal-volcano. php • http: //kshitija. wordpress. com/2006/06/08/landslides-prevention/ VIDEO • http: //www. youtube. com/watch? v=B 0 RWLx. OFGLY • http: //www. youtube. com/watch? v=k. EUXr 6 FMt. Wk • http: //livesaildie. com/2007/04/ Quit

Concept Map Quit

Concept Map Quit

Return to Avalanches Click On the Image For Video of Avalanches

Return to Avalanches Click On the Image For Video of Avalanches