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A disaster is somthing really bad that can happen. it can be caused by meny things.Like big winds and other things Disasters are things that can be happened by humens by litterin and poluiton



Here are some natural disasters! __**
 * __WHAT IS A NATURAL DISASTER?

__*** tsanumi**__
A natural disaster can be caused by nature and it could even kil people. How do volcano's erupt volcano's are formed when there is great stress in the earths crust and the pressure of magma reachers so high that it finds its way upwards causing an eruption. sometimes the magma chamber breaks in side and only reaches to the flack or summit of volcano and sometimes reaches the surface of the volcano.
 * thypoon[[image:file:///Users/student/Desktop/volcano9.gif]]
 * __* earthquick__**[[image:file:///Users/student/Desktop/volcano9.gif]]
 * __*bushfire__**
 * __*cyclone__**
 * __*twister__**
 * __*sinkholes__**[[image:file:///Users/student/Desktop/volcano9.gif]]
 * __*valcanos
 * huricanes__**

= WEEK 4 =

We casserfiy a disaster by the amount and property distroud and lives lost.
how does a tornado start?




 * ||  |||||||||| The rain and hail in the thunderstorm cause the funnel to touch down creating a tornado. ||
 * ||  |||||||||| The rain and hail in the thunderstorm cause the funnel to touch down creating a tornado. ||
 * ||  |||||||||| The rain and hail in the thunderstorm cause the funnel to touch down creating a tornado. ||

** Know the Lingo **


 * SURFACE FIRES** - The most common type of wildfires, surface fires move slowly and burn along the forest floor, killing and damaging vegetation.


 * GROUND FIRES** - These are usually started by lightning, ground fires burn on or below the forest floor through the root system.


 * CROWN FIRES** - These fires spread by wind moving quickly along the tops of trees.


 * SANTA ANA WINDS** - "Santa Ana" is the name given to the gusty northeast or east wind that occurs in Southern California during the fall and winter months. Santa Ana winds are often hot and very dry, greatly aggravating the fire danger in forests and bush lands.


 * CONFLAGRATION** - A large and destructive fire, typically aggravated by strong winds that carry firebrands over natural or artificial barriers.





**Know the Lingo** FLOOD WATCH - means that an overflow of water from a river is possible for your area.


 * FLASH FLOOD WATCH -** means that flash flooding is possible in or close to the watch area. Flash Flood Watches can be put into effect for as long as 12 hours, while heavy rains move into and across the area.

FLOOD WARNING - means flooding conditions are actually occurring in the warning area.


 * FLASH FLOOD WARNING -** means that flash flooding is actually occurring in the warning area. A warning can also be issued as a result of torrential rains, a dam failure or snow thaw.

**What is a windstorm?** A windstorm is just a storm with high winds or violent gusts but little or no rain.

Flash floods are the #1 weather-related killer in the U.S. Nearly 80% of flash flood deaths are auto related. Know beforehand if your area is a flood risk.
 * Do flash floods hurt people?**



** Know the Lingo **
 * EPICENTER** - The point on the earth's surface directly above the source of the earthquake.


 * SEISMIC WAVES** - The energy created by the quake travels in waves from the epicenter, where they are the strongest. The waves shake buildings, structures and the earth vertically, causing them to move horizontally!


 * RICHTER SCALE** - A measurement of an earthquake's intensity. Each one-point increase on the scale indicates ten times the amount of shaking and 33 times the amount of energy. The energy released by a large earthquake may be equal to 10,000 times the energy of the first atomic bomb.

What are some earths layers!