1. WELCOME MY PRESENTATION
NATURAL DISASTERS

2. TOPICS:
1:EARTQUAKE.
2:AVALANCHES.
3:TSUNAMIS.
4:FLOODS.
5:VOLCANOS.

3. EARTQUAKES:
Cause: Earthquakes are caused by the movement of tectonic plates on the surface of the earth.
Deadliest Earthquakes: The Shaanxi earthquake is the deadliest earthquake on record, killing approximately 830,000 people. More than 97 counties in the provinces of Shaanxi.

4. Avalanches:
Cause: Major causes of avalanches are weather, snowfall, temperature, wind direction, snow pack conditions, slope angle, slope orientation, terrain, and vegetation.
Deadliest Avalanche: The Ancash earthquake was the worst catastrophic natural disasterever recorded in the history of Peru .74,194 people died for this disaster.

5. Tsunamis:
Cause:A tsunami is a large ocean wave that is caused by sudden motion on the ocean floor. This sudden motion could be an earthquake, a powerful volcanic eruption.
Deadliest Tsunami: In ,000 people were dead or missing and million more were homeless in 11 countries, making it the most destructive tsunami in history.

6. Floods:
Cause: Heavy rainfalls are one of the major causes of floods. Floods can be caused by the overflow of huge volumes of water, from rivers, lakes, oceans etc.
Deadliest Flood: In china in ,000 people were died for this disaster.

7. Volcanoes:
Cause: Inside the earth’s core there is a red-hot liquid rock, called magma. Volcanoes happen when magma rises to the surface of the earth.
Deadliest Volcano: In1815 At least 71,000 people were died in Sumbawa islands of Indonesia.

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