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What are NaturalWhat are Natural

Disasters?Disasters?

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The World is always changing.

Natural disasters are changes which are

so great they may cause damage to the

shape of the land or to the lives of people

and other living things.

Great changes happen deep inside the

Earth and on its surface. The changes onthe outer part of the Earth happen

because of different kinds of weather.

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What are Natural Disasters?What are Natural Disasters?

Volcanic eruptionVolcanic eruption

EarthquakeEarthquake

Cyclone or HurricaneCyclone or Hurricane AvalancheAvalanche

FloodFlood

DroughtDrought Forest fre orForest fre or

BushfreBushfre

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VolcanoesVolcanoes A volcanic eruption is the spurtingA volcanic eruption is the spurting

out o gases and hot lava rom anout o gases and hot lava rom an

opening in the Earths crust!opening in the Earths crust!

"ressure rom deep inside the Earth"ressure rom deep inside the Earth

orces ash# gas and molten rock toorces ash# gas and molten rock to

the surace!the surace!

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EarthquakeEarthquake An earthquake is a violent shaking oAn earthquake is a violent shaking othe ground! $ometimes it is so strongthe ground! $ometimes it is so strongthat the ground splits apart!that the ground splits apart!

%hen parts o the earth# called plates#%hen parts o the earth# called plates#move against each other giant shockmove against each other giant shock

&aves move up&ards to&ards the&aves move up&ards to&ards the

surace causing the earthquake!surace causing the earthquake!

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Cyclone, Hurricane,Cyclone, Hurricane,

Tornado or TyphoonTornado or Typhoon

!yclone is a fierce storm with storm winds

that spin around it in a giant circle. During acyclone trees can be uprooted" buildings

can be destroyed and cars can be

overturned.

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AvalancheAvalanchen valanche is a movement of snow" ice androck down a mountainside. valanches happen

very suddenly and can move as fast as a racing

car up to #$%mph.

valanches can be caused by &

snow melting 'uickly

snow free(ing" melting then free(ing again

someone skiing

a loud noise or an earth tremor

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FloodFlood flood is caused by an overflow of water whichcovers the land that is usually dry.

)loods are caused by heavy rain or by snow

melting and the rivers burst their banks andoverflow.

!ostal floods are caused by high tides" a rise in

sea level" storm waves or tsunami *earth'uakesunder the sea+.

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DrouhtDrouht drought is the lack of rain for a long time.

,n #-/ a drought began in frica. !hildren born

during this year were five years old before rain

fell again.

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Forest Fire or !ush"ireForest Fire or !ush"ire)ires can burn out of control in areas of forest orbush land. )ires are caused by lightning" sparks

of electricity or careless people. Wind may blow a

bushfire to areas where people live.