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Earthquakes:

Earthquakes are measured using measurements from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter magnitude scale. These  two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.

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Hanan nasser 9/5

Tsunami :
A tsunami is a group of huge waves that arise from the movement of a large area of ​​water, such as the ocean, and tsunamis also arise from earthquakes and great movements, whether on or under the water surface, and some volcanic eruptions and eruptions under the water surface, landslides and water earthquakes.  Also, it may be due to explosions or bombs, and it occurs in water bodies such as the Humait, and most of them are on the beaches.  A tsunami is a dangerous natural disaster that may reach a length of half a kilometer or maybe more.  It occurred on December 26, 2004, causing a tsunami that killed nearly 300,000 people.  Indonesia suffered the highest percentage of property losses and casualties, and this tidal wave is one of the largest natural disasters in recent history.  There are many countries affected by it and perhaps there are lost lands, but the most dangerous countries in the tsunami are Thailand, Hawaii, Indonesia and many other countries.  His action is to tell everyone that there is a second prompt. Go to a place, for example under the table, never stand in open places. Call in the emergency and try to go to the highest area that you can go to, for example your roof.

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Hello my presentation today is about wildfires. Nearly 85 percent of wildfire are caused by humans, Human caused fires result from campfires or ignited by heat from the sun or a lightning strike.
There are a lot of countries wildfire happened in but the countries with the most wildfire are: Brazil,  California, Washington, Oregon. The largest wildfire in modern history was the Black Friday Bushfire in Australia's Victoria State in January 1939, burning some 4.9 million acres and claiming 71 lives.
If there is a wildfire first you should call for help
, find a place that is far from the fire, Cover your nose and mouth with any peace of cloth.
Well thank you for Listening.

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Hello . my  presentation is about tsunami .
A tsunami is a series of massive waves created by earthquakes and volcanic eruptions that occur below or near the ocean , It occurs wherever there are coastlines on the Pacific or the Caribbean , the largest tsunami occurred in Sumatra, Indonesia, on December 26, 2004, and the height of this tsunami reached 50 kilometers , If a tsunami does happen, you should do :
- First, protect yourself from an earthquake.
- Go to higher ground farther away .
- Hear emergency information and alerts .
Thank you for listening .

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Flood.
A flood is an overflow of water that submerges land that is usually dry. Floods can also occur in rivers when the flow rate exceeds the capacity of the river channel, particularly at bends or meanders in the waterway. Floods often cause damage to homes and businesses if they are in the natural flood plains of rivers.

The largest known meteorological flood—one caused by rainfall, as in the current Mississippi River flood—happened in 1953, when the Amazon River overflowed.

In the event of a flood, here are some tips to follow:Move immediately to higher ground or stay on high ground.Evacuate if directed.
Avoid walking or driving through flood waters. Turn Around, Don't Drown! Just 6 inches of moving water can knock you down and 1 foot of water can sweep your vehicle away.

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Tsunami

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Tsunami

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Earthquakes It is a natural phenomenon that occurs in the interior of the earth, and is caused by the movement of the rocky plates, and the effect of the earthquake extends to the surface of the earth, and results in the occurrence of vibration vibrations, and thus cracking in the internal rocks, and this in turn causes the displacement of those rocks due to the geological effects, and thus the fissures in the ground

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Tsunami
today my Presentation will be about the Tsunami . the tsunami It is a group of huge waves that arise from the movement of a large area of water, such as the ocean, and tsunamis also arise from earthquakes and great movements, whether on or under the water surface,

and it happen in Indonesia. India Japan Portugal but the biggest one Happened in Indonesia ,Indonesia suffered the highest percentage of property losses and casualties, and this tidal wave is one of the largest natural disasters in recent history.

and the last thing that what you have to do if  tsunami  happen first thing you have to do  Going to a higher altitude rather than farther When a tsunami warning statement is issued, the first step should be to move to a higher location, rather than a farther place on the same land level. ...
Do not use the car ...
Rivers are also under threat ...
Do not leave the evacuation site .
that sit guys thanks for listening.

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Volcano earthquake

Hello. My presentation is a bout volcanic eruptions.

Volcanoes are formed by lava and ash eruptions when magma rises through cracks or "weak spots" in the Earth's crust. The accumulation of pressure in the ground is triggered by events such as the movement of plates that force molten rocks to burst into the air, causing volcanic eruptions. Then the lava cools to form a new crust. Volcanic eruptions can happened any time.
We have many countries where volcanic eruptions occur, such as Italy, Costa Rica and Washington.
Scientists say the biggest volcanic eruptions in the world happened in lceland.
In the event of a volcanic eruption, you must take action, including going to a safe place and wearing a muzzle so that it is not affected by the bad air.

Thank you for listening. Does anyone have any questions.

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Tornado

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Tsunami

-  Tsunami is a series of enormous ocean waves caused by earthquakes, underwater landslides, volcanic eruptions, or asteroids. Tsunamis can: Travel 20-30 miles per hour with waves 10-100 feet high. Cause flooding and disrupt transportation, power, communications, and the water supply.

- Scientists estimate that almost three quarter of the world tsunamis occur in the Pacific Ocean.

- the largest tsunami wave ever recorded broke on a cool July night in 1958 and only claimed five lives. A 1,720 foot tsunami towered over Lituya Bay, a quiet fjord in Alaska , after an earthquake rumbled 13 miles away.

- you should to stay in high -lying , and don't go to the beach or been near to the beach or sea , and grab something as strong as a tree.

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Volcanoes

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Flood

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the flood

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earthquake
An earthquake is caused by a sudden shaking of the earth that results from releasing the energy stored in the rocks of the earth's crust.

Earthquakes occur along plate boundaries as a result of plate collision or sliding

The Shanxi earthquake is also called the Hao County earthquake, the largest earthquake recorded in terms of casualties

If you are outside the house, try to move away from buildings and go towards empty places like parks and squares. If you are driving, try to park as soon as possible, avoiding going through tunnels or under or over bridges.

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You are going to give a short presentation about one

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