What is an earthquake?
Earthquakes are the shaking, rolling or sudden shock of the earth’s surface.
The point deep in the earth's crust where the earthquake begins.
The epicentre is the place on the earths surface where the effects of the earthquake is most felt. It is directly above the focus. Most damage is done here
Where do earthquakes happen?
Earthquakes happen most often in places where plates collide
How do earthquakes happen?
When plates collide they build up pressure beneath the earth’s crust. When this pressure is released it causes a violent shaking of the earth’s crust.
What happens when an earthquake happens?
.When an Earthquake occurs shock waves move out from the focus and the epicentre.
Where is most damage done?
These shock waves are strongest at the epicentre. The most damage occurs to built up areas closest to the epicentre.
What is the name of the instrument used to measure earthquakes?
What is the name of the scale that the earthquake is show on?
Damage Done by earthquake
Roads and bridges damaged or destroyed
Houses damaged or destroyed
Fires, gas explosions.
Injury and loss of life.
Type of aid needed.
Emergency aid in the form of medicine, shelter, clean water ,food..
What can be done to help reduce the damage done? 3 things
1. Have a good warning system place to alert people in advance.
2. Build brick not wooden houses as these are stronger.
3. Build earthquake proof building, these buildings are built on rollers that move with the earthquake.