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Natural Disasters. By: Taylor Merrill. Contents. What are natural disasters? Tornadoes Volcanoes Earthquakes Blizzard Floods Tsunami Drought Avalanches Sources. Natural Disasters.

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Presentation Transcript
Natural disasters

Natural Disasters

By:

Taylor Merrill


Contents
Contents

What are natural disasters?

Tornadoes

Volcanoes

Earthquakes

Blizzard

Floods

Tsunami

Drought

Avalanches

Sources


Natural disasters1
Natural Disasters

  • Is an effect from a natural hazards. They take a huge effect on the environment. They usually result in many deaths. Natural disasters usually are just natural if there is no human involvement.


Tornadoes
Tornadoes

There are many types of tornadoes. A few of them are…. Supercell Tornadoes, Landspout,Gustnadoes, Waterspouts, Dust Devils and Firewhirls.

Supercell tornadoes- are the most powerful kind of volcano. They are great big thunder storms with such a strong wind they can throw ANYTHING

Landspout- are generally weaker than a supercell and are not related to a wall cloud.

Gustnadoes-are very weak and have a very few minute life to live. They usually follow the front of a thunder storm.

Watercell- are formed over a larger area of water. They create small thunder storms and rarely turn in to a supercell tornadoes.

Dust devils – formed on deserts on hot, dry, and lightly breezy days. They are not associated with clouds or thunder storms.


Volcanoes
Volcanoes

An eruption maybe a deadly disaster alone without the lava and ash. The lava is produced during the eruption is superhot rock and is crumbly and gluey. The volcanic ash. There are many volcanic dangers such as lava flows, pyroclasticflow, lahars, gases landslide avalanches and tsunamis.

Krakatoa


Earthquakes
Earthquakes

Earthquakes are one of the most powerful event on the earth causing landslides and avalanches. They can also cause fires, and broken gas and power lines!!! An earth quake is when the tectonic plates move. This causes buildings to collapse, and cracks in the earth.

HELP!!!HELP!!!


Blizzards
Blizzards

Blizzards are strong snow storms. This happens when the cold air is moved to warmer climates from the arctic. Most blizzards end with a very unusual warm period.


Floods
Floods

Floods cover a normally dry area of land most floods are harmful. They erode and carry away houses and a lot of other things. Most floods cost at least 1billion dollars to repair the damages.

Floods are created mostly from rainfall on snow, ice jams, rainfall and snowfall.


Tsunami
Tsunami

  • Tsunamis are huge walls of water that travel faster than jets. Tsunamis are created from earthquakes in the ocean and lifting up the water strongly then coming to shore heavily. The worst tsunami was Christmas 2004, it was a

    9.2 earthquake so powerful it actually sped the rotation of Earth!

http://science.howstuffworks.com/


Drought
Drought

  • Drought is when the area common for rainfall has unusually dry weather. The effects are that the crop is reduced and increased livestock and wild life deaths.

This happens from drought!


Avalanches
Avalanches

  • An avalanche is a pile of rock debris and/or snow that moves rapidly down a mountain. The causes of an avalanche is a loud noise or voice causing the ground to vibrate making the snow/rock debris to loosen and move down hill


Sources
Sources

  • Wikipedia.com

    http://www.worldbookonline.com/student/article?id=ar171680&st=earthquakes&gr=Welcome+Scoilnet+user

    http://www.worldbookonline.com/advanced/article?id=ar064760&st=blizzards&gr=Welcome+Scoilnet+user

http://science.howstuffworks.com/nature/natural-disasters/tsunami2.htm

http://www.universetoday.com/39319/effects-of-tsunamis/

http://nilesema.com/avalanches.htm

http://library.thinkquest.org/03oct/01424/what_are_avalanches.htm

http://dalje.com/en-world/avalanches-kill-at-least-10-in-afghanistan/225409


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