Show:
Forces in Earths Crust
Waves
Who's Fault
Shake n' Make
Vocabulary
100
A force that acts on rock to change its shape or volume.
What is stress
100
This is the shaking and trembling that results from the movement of rock beneath Earth’s surface
What is an earthquake
100
A fault in which the hanging wall has moved downward relative to the footwall, usually happens where tension exists in the crust or it is being pulled apart.
What is a normal fault
100

A recording of the waves generated during an earthquake.

What is a seismogram?

100
The point on Earth's surface directly above the focus of an earthquake.
What is the epicenter
200
Stress that stretches rock so that it becomes thinner in the middle
What is tension
200

These slower seismic waves can travel only through solid materials. They produce an up-and-down or side-to-side motion

What is an S-wave

200
The block of rock that forms the lower half of a fault.
What is the footwall
200

The division between the Hanging wall and the footwall block is called....

What is the fault plane?

200

The material that a wave moves through.

What is the medium?

300

A force that pushes on or squeezes a material.

What is compression

300

A type of seismic wave that stays at Earth's surface

What is a Surface wave

300
In this fault in which the hanging wall moves up relative to the foot wall. Usually the result of the compression of the crust.
What is a reverse fault
300
A scale that rates an earthquake’s magnitude based on the size of its seismic waves.
What is the Ritcher Scale
300
The point beneath Earth's surface where rock breaks under stress and causes an earthquake
What is the focus
400
A type of stress that pushes a mass of rock in two opposite directions. It causes rock to break and slip apart or to change shape.
What is shearing
400
A compression wave, fastest of seismic waves, that can pass through any substance (gas, liquid or solid.)
What is P-wave
400
A type of fault in which rocks on either side move past each other sideways with little up or down motion
What is a Strike-Slip fault
400
A device that records ground movements caused by seismic waves as they move through Earth.
What is a seismograph
400

What seismic waves are considered to be body waves?

What is the S-wave and P-wave?

500
a wave of energy generated by the earths vibration
What are seismic waves
500
The water displaced by the earthquake may form a large wave called this
What is a tsunami
500
The block of rock that forms the upper half of a fault.
What is the hanging wall
500

The area underground where energy is released at a fault. 

What is the focus?

500

A crack in the crust where blocks of rock are trying to move relative to each other.

What is a fault?