boom, boom earthquakes

Boom, Boom Earthquakes

By Danny and Moises

How earthquakes happen

• Sometimes it happens when a transform boundary occurs

• That is when two plates slide past each other

Earth’s plates

• Earth has 12 tectonic plates

• They have lots of force

• Forces are examples for stress• The Earth’s plates are like a candy bar

Types of stress

• There is a stress called tension

• Tension stretches rock

Stress

• There is one called compression

• Compression pushes rock’s together

More stress…

• Shearing is also a type of stress

• Shearing has the power to cause masses of rock to slip

Types of Faults

• One type of fault is a normal fault

Reverse fault

• There is one type of force it is a reverse fault

• It makes the hanging wall move up relative to the footwall

Strike-slip fault

• There is a fault called strike-slip fault

• Strike slip fault go past each other

Anticline, Syncline, and Plateau

• A anticline is an upward fold formed by compression

• Syncline is a downward fold in a rock• Plateau is a large area of flat land high

above above sea level

Natural Earthquakes happen by surprise

They can be really dangerous

The Natural Earthquake

Web sites

• http://static.howstuffworks.com/gif/12-of-the-most-destructive-earthquakes.jpghttp://www.windows.ucar.edu/earth/images/earth_plates_usgs_L.jpghttp://www.disastervideo.net/earthquake-car.php

http://phobos.ramapo.edu/~erainfor/SW04/07MCfault.JPGhttp://www.geography4kids.com/misc/photos/shearing.jpg

http://www.indiana.edu/~g103/G103/week9/revfault.jpg