What is an earthquake?
An earthquake is a sudden
violent shaking of the ground caused by tectonic plates usually causing great
destruction as a result of the movements within the earth’s crust. The edges of
the tectonic plates are marked by faults. Most earthquakes occur along the fault
line the fault line signals the end of the tectonic plate and a start to a new tectonic plate when the tectonic
plates slide past each other or collide against each other it causes an
earthquake destroying cities, people and buildings. Tectonic plates are slow in
moving so take a while for the earthquake to happen, earthquakes happen for a
long time they do not just happen in a blink of an eye, basically an earthquake
is a shaking of the ground caused by tectonic
plates.
We all know that an earthquake is a natural disaster along with tsunamis, heat waves and bush fires.
A natural disaster means it is not man made man can worsen the disaster but
can’t make it and this is why because we didn’t make the tectonic plates we have
some advice when it’s going to happen in china scientist have found a way to
detect when an earthquake is going to happen but they can only detect the
earthquake ten seconds before the earthquake happens allowing you to get
yourself to safety or protect yourself. Ten seconds might not sound like a long time but means alot to the people that will be effected by the earthquake but if i had ten seconds i would take it.
Solid ground is often used to describe something as stable. Usually the ground under foot seems very stable
but this is not always true. Underground when an earthquake is happing the
ground twists under us like a top while it jerked this way, and up and down and every other way.
Most people when they are in an earthquake they can not stand up right they usually jrop to the
groung or collapse to the groung.The location inside the Earth where an earthquake
begins is called the Focus .The point at the Earth’s surface directly above the Focus
is called the epicentre, the strongest shaking happens at the epicentre.
Youtube video
http://www.youtube.com/watch?v=aC8LlCA7hqY
references:http://tremor.nmt.edu/faq/how.html