There are several types of stresses that can cause earthquakes, including tension, shearing, and compression. Tension occurs when rocks are pulled apart, shearing when rocks slip past each other, and compression when rocks are squeezed together. Normal faults are caused by tension in the earth's crust and form when the hanging wall above the fault is pulled away from the footwall below. Compression stress can squeeze and fold rocks, contributing to the formation of mountains.

1. Earthquakes By Michal Wright And Kharon Martin Click here to watch a video of

2. Tension Tension pulls the earths crust stretching rock so that it becomes thinner

3. Sheering Stress that pushes a mass of rock in two opposite directions are called sheering Sheering may cause rock to break and slip apart to change its shape

4. Normal fault hanging wall and footwall The block that lies below a normal falts are called a footwall The rock that is above a normal falt is called a hanging wall Normal faults are caused by tension in the earths pulling rocks apart

5. Stress There are 3 kinds of stress 1 tension when rock pulls apart 2 Compression when rocks squeeze 3 Shearing causes rock to slip past each other Here is a example of stress when a candy bar is being torn apart slowly

6. Compression Compression squeezes rock until it folds or breaks Compression pushes rock together forming mountains

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