Ppton Natural Disaster] LATEST

8/6/2019 Ppton Natural Disaster] LATEST

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Natural DisastersNatural Disasters


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Types of Natural DisastersTypes of Natural Disasters

TornadoesTornadoes

HurricanesHurricanes

EarthquakesEarthquakes

VolcanoesVolcanoes

FloodsFloods

TsunamisTsunamis WinterWinter

StormsStorms

WildfiresWildfires


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EarthquakeEarthquake

Sudden movement of theSudden movement of theearth's crust caused by theearth's crust caused by therelease of stress collectedrelease of stress collectedalong faults or by volcanicalong faults or by volcanic

activityactivity


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EarthquakeEarthquake


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HurricaneHurricane

If winds reach 74 mph, then they are called:If winds reach 74 mph, then they are called: "hurricane""hurricane" (the North Atlantic Ocean, the Northeast(the North Atlantic Ocean, the Northeast

Pacific Ocean east of the dateline, or the South PacificPacific Ocean east of the dateline, or the South Pacific

Ocean east of 160E)Ocean east of 160E) "typhoon""typhoon" (the Northwest Pacific Ocean west of the(the Northwest Pacific Ocean west of thedateline)dateline)

"severe tropical cyclone""severe tropical cyclone" (the Southwest Pacific(the Southwest PacificOcean west of 160E or Southeast Indian Ocean east ofOcean west of 160E or Southeast Indian Ocean east of90E)90E)

"severe cyclonic storm""severe cyclonic storm" (the North Indian Ocean)(the North Indian Ocean) "tropical cyclone""tropical cyclone" (the Southwest Indian Ocean)(the Southwest Indian Ocean)


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LightningLightning

Brilliant electric spark discharge inBrilliant electric spark discharge in

the atmosphere, occurring within athe atmosphere, occurring within athundercloud, between clouds, orthundercloud, between clouds, orbetween a cloud and the groundbetween a cloud and the ground


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TsunamiTsunami

An unusually large sea wave producedAn unusually large sea wave produced

by a seaquake or undersea volcanicby a seaquake or undersea volcaniceruptioneruption


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Effects of TsunamisEffects of TsunamisIndian Ocean TsunamiIndian Ocean Tsunami December 26, 2005December 26, 2005


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HowHowTsunamisTsunamis ImpactImpact

theE

nvironmentthe

Envir

onment

Houses, Buildings, and other StructuresHouses, Buildings, and other Structuresdestroyeddestroyed

Loss of powerLoss of power

ErosionErosion

Fresh water contaminatedFresh water contaminated


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VolcanoVolcano

Vent in the earth's crust throughVent in the earth's crust through

which lava, steam, ashes, etc., arewhich lava, steam, ashes, etc., areexpelled, either continuously or atexpelled, either continuously or atirregular intervalsirregular intervals


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FloodFlood

Temporary rise of the water level, asTemporary rise of the water level, asin a river or lake or along a seacoast,in a river or lake or along a seacoast,resulting in its spilling over and outresulting in its spilling over and out

of its natural or artificial confinesof its natural or artificial confinesonto land that is normally dry. Floodsonto land that is normally dry. Floodsare usually caused by excessiveare usually caused by excessiverunoff from precipitation orrunoff from precipitation orsnowmelt, or by coastal storm surgessnowmelt, or by coastal storm surgesor other tidal phenomena.or other tidal phenomena.


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TornadoTornado

Violently rotating column of airViolently rotating column of airextending from a cumulonimbusextending from a cumulonimbuscloud to the Earth, ranging in widthcloud to the Earth, ranging in widthfrom a few meters to more than afrom a few meters to more than akilometer and whirling at speedskilometer and whirling at speedsbetween 40 and 316 mi per hour.between 40 and 316 mi per hour.


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Effects of Tornadoes in AlabamaEffects of Tornadoes in Alabama


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DroughtDrought

Long period of abnormally low rainfall,Long period of abnormally low rainfall,especially one that adversely affectsespecially one that adversely affectsgrowing or living conditions.growing or living conditions.


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Drought FactsDrought Facts

The cost of losses due to drought in theThe cost of losses due to drought in theUnited States averages $6United States averages $6--8 billion every8 billion everyyear, but range as high as $39 billion foryear, but range as high as $39 billion for

the three year drought of 1987the three year drought of 1987--1989,1989,which was the most costly natural disasterwhich was the most costly natural disasterdocumented in U.S. history.documented in U.S. history.

The two major droughts of the 20thThe two major droughts of the 20th

century, the 1930s Dust Bowl drought andcentury, the 1930s Dust Bowl drought andthe 1950s drought, lasted five to seventhe 1950s drought, lasted five to sevenyears and covered large areas of theyears and covered large areas of thecontinental U.S.continental U.S.


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Heat WaveHeat Wave

An air mass of high temperatureAn air mass of high temperaturecovering an extended area and movingcovering an extended area and moving

relatively slowlyrelatively slowly A period of abnormally hot and usuallyA period of abnormally hot and usually

humid.humid.


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HowHowVolcanic EruptionsVolcanic Eruptions Impact theImpact the

Envir

onment

Envir

onment

Houses, buildings, and otherHouses, buildings, and otherstructures destroyedstructures destroyed

FiresFires Toxic gases released into theToxic gases released into the

atmosphereatmosphere

Carbon dioxide emitted fromCarbon dioxide emitted fromvolcanoes adds to the naturalvolcanoes adds to the naturalgreenhouse effect.greenhouse effect.

Loss of habitatLoss of habitat


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HowHowBlizzardsBlizzards Impact theImpact the

Envir

onment

Envir

onment

Flooding when snows meltFlooding when snows melt

Trees fallTrees fall

Power outagesPower outages HypothermiaHypothermia


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HowHowFloodingFlooding Impacts theImpacts the

E

nviro

nmentE

nviro

nment DiseaseDisease

Loss of habitatLoss of habitat

Houses, buildings, and otherHouses, buildings, and otherstructures destroyedstructures destroyed

Household wastes get into the waterHousehold wastes get into the water

systemsystem Power outagesPower outages


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HowHowTornadoesTornadoes Impacts theImpacts the

E

nviro

nmentE

nviro

nment Tornadoes could hit hazardous orTornadoes could hit hazardous or

toxic materials which could carriedtoxic materials which could carriedby a thunderstorm and thenby a thunderstorm and then

transported along ways downtransported along ways downstream.stream.

Could transport certain types ofCould transport certain types of

small animals and plants across thesmall animals and plants across thelandland

Destroys topsoil and cropsDestroys topsoil and crops


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HowHowDroughtDrought Impacts theImpacts the

EnvironmentEnvironment Young trees dieYoung trees die Dried up lakes and other water sourcesDried up lakes and other water sources Loss of livestock and cropsLoss of livestock and crops People use more fuel during droughts.People use more fuel during droughts.

Losses or destruction of fish and wildlife habitatLosses or destruction of fish and wildlife habitat Lack of food and drinking water for wild animalsLack of food and drinking water for wild animals Increase in disease in wild animals, because of reducedIncrease in disease in wild animals, because of reduced

food and water suppliesfood and water supplies Migration of wild animals, leading to a loss of wildlife inMigration of wild animals, leading to a loss of wildlife in

some (droughtsome (drought--stricken) areas and too many wildlife instricken) areas and too many wildlife in

areas not affected by droughtareas not affected by drought Increased stress on endangered speciesIncreased stress on endangered species Lower water levels in reservoirs, lakes, and pondsLower water levels in reservoirs, lakes, and ponds Loss of wetlandsLoss of wetlands More firesMore fires

Wind and water erosion of soils, reduced soil qualityWind and water erosion of soils, reduced soil quality

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