6- Forces that Shape the Earth

Front

Stress that PUSHES a mass of rock in two opposite directions is called _______

Back

Shearing

Front

A force that acts on rock to change its shape or volume is called _______

Back

Stress

Front

In a normal fault, the part of the fault that lies below the other part is called the _______

Back

Footwall

Front

What type of stress forces rocks to fold or break?

Back

Compression

Front

Large flat area of flat land elevated high above sea level.

Back

Plateau

Front

The _______ is the point beneath Earth’s surface where rock breaks under stress and triggers an earthquake.

Back

focus

Front

The type of seismic waves that arrive at the surface FIRST and move by compressing and expanding the ground like an accordion are called

Back

P waves

Front

S waves are also known as _______

Back

secondary waves

Front

In what direction do seismic waves carry the energy of an earthquake?

Back

away from the focus

Front

What does a seismograph record?

Back

the ground movements caused by seismic waves