Show:
Forces Inside Earth
Faults
Seismic Waves
Chapter 11
People and Earhtquakes
100
Vibrations produced by the breaking of rock.
What is an earthquake.
100
When the rock above the fault surface moves downwards in relation to rock below, this creates this type of fault.
What is normal fault.
100
Waves that are generated by an earthquake that travel through Earth.
What is seismic waves.
100
This type of wave moves rock particles backward, in a rolling motion, a side-to-side, or in a swaying motion. (buildings too)
What is surface wave.
100
The measure of energy released during an earthquake.
What is magnitude.
200
When rocks break they move along surfaces called______.
What is a fault.
200
When the surface is forced up over the rock below the fault surface this type of fault occurs.
What is reverse fault.
200
The first wave to arrive and only moves in a back and forth motion.
What is Primary waves.
200
In order to locate the epicenter what do seismologists have to do?
What is use THREE circles(points) and find the intersecting line.
200
Seismic sea wave that begins over an earthquakes focus and can be highly destructive when it crashes on shore.
What is a tsunami.
300
This is the force that pulls rocks apart.
What is tension.
300
When rocks on either side of the fault are moving past each other without much up or down movement.
What is strike-slip fault.
300
This point is where the energy is released. (below ground)
What is focus.
300
Seismic waves from an earthquake are measured with this instrument.
What is seismograph.
300
Occurs when wet soil acts more like a liquid during an earthquake.
What is liquefaction.
400
This is the force that squeezes rock together.
What is compression.
400
What produces the forces that cause rocks to break and faults to form?
What is stress.
400
This wave moves through Earth causing particles of rocks to move up and down and side to side.
What is secondary wave.
400
This layer is the largest, lying directly above the outer core and made mostly of silicon, oxygen, magnesium, and iron.
What is the mantle.
400
What is one way to help prevent damage or injury during/prior to an earthquake?
What is answers will vary....:)
500
This is the force that causes rocks on either side of a fault to slide past each other.
What is shearing.
500
The San Andreas Fault is a result from which type of fault?
What is stike-slip.
500
This is the point on Earth's surface located directly above the earthquakes focus.
What is epicenter.
500
This scale measures the strength of the earthquake and is based on the height of the lines on the seismogram. EX. (1.3)
What is Richter Magnitude Scale.
500
This scale is used to measure the intensity or an earthquake by using amount of damage caused. EX. (X, V, I)
What is Mercalli Intensity Scale.