Natural+Disasters

Japans earth quake caused the island to move a whole 13 feet closer to the u.s.a, because the Pacific tectonic plate went under the North American plates making the whole planet to spin faster. -Garet Robison

Volcanos :)
 * When valcanos errupt they only effect one area unless they are a insane one like Mt. Vesuvius which buried Pompei
 * Pressure under the Earth from tectonic plates cuases the volcano to errupt
 * There are three different types of erruptions .. eruption column, pyroclastic flow, and lateral blast
 * Eruption Column- rise up to 45 km, tephra (fall deposit) gets picked up by the wind and then will fdall back down creating an ash fall
 * Pyroclastic Flow- Where the Fall Deposit goes top speed down the sides of the volcano
 * Lateral Blast- when the volcano is on its side and looks like a cave
 * Magma and Lava the same thing or different?
 * Magma and Lava are both molten rock
 * magma comes from below Earths crust and when it comes out of the Volcano it becomes Lava

Earthquakes
 * Happens when two peices called Faults rub againist each other
 * Sometimes earthquakes have foreshocks but, usally earthquakes have aftershocks
 * The "big" Earthquake which EVERYONE will feel (in the consintarated area) it ... is called the " Mainshock"
 * According to Mrs. Jacques California will be having a huge earthquake in the next 10-15 years
 * The Biggest Earthquake was in Chile, on May 22, 1960 and was a 9.5 \
 * On the Richter Scale every earthquake is 10 times stronger then the previous
 * A 10 on the Richter Scale happens every 1000 years and cuases extreme damage

Tsunami
 * Cuase alot of damage
 * One has recently hit Japan
 * first an earthquake, under water denation, landslides, or volcanic erruptions happen
 * Can travel 100 of miles
 * When a big fualt rises it causes the ocean to make like a huge wave and it just keeps on going
 * Major Tsunami happened in indonesia
 * The word Tsunami comes from Japan because they have soo many
 * Tsunami is like a giant blob eating the town/ island/ etc. it just pulls everything out to sea about a mile out ( depending on the tsunami) and then kinda like spits it back out ...

Tornadoes
 * Wind speeds up to 250 miles per hour
 * Picks up debri and dust
 * A weak tornadeo lasts 1- 10 min and is less than 110mph
 * A strong tronadeo lasts 20 + min and is between 110- 205 mph
 * a violent tronadeo lasts one hour
 * In the southern states tronadoes happen March-May
 * In the Northern states usally happens in the Summer
 * Devlop in warm/ moist air..... then a thunderstorm happens with strong winds, hail ... and then you have a tornadeo

Avalanches
 * Happens where ever snow may be on a angle
 * the snow "hill" or Mtn. is made up of many layers.. an avalanche happens when one layer slides on the other.. which cuases a chain reaction and good chunck of the mountian falls off ... which is what we call an avalanche

Floods
 * They happen when the ground can NOT absorb rain/ snow .... or when water "runs-off" from a stream,river, or reservoirs
 * Two types of floods
 * Flood- regular flood that you hear about.. they last for hours or days
 * Flash Floods - they are pretty much the same thing as the "regular flood" but only lasts for minutes or seconds
 * Flash floods usally happens at night

Limnic Eruption
 * referred as a lake overturn
 * rare natural disater
 * CO2 erupts from the lake.. this kills humans and animals by suffocating ;(
 * this can cuase tsunamis in a lake
 * Can happen when the lake has Gas, landslides, high pressures
 * it kills humans and aniamals because < the CO2 in the lake creates a cloud over the lake and then spreads through area
 * the cloud has every little oxygen
 * when humans try to breath they pretty much kill themselves from inhaling the CO2

By: Mia Harris