It is not my fault
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Earthquake Anatomy
Measuring Earthquakes
Earthquake Symptoms
100
The crack in the earth's crust where stress is suddenly released causing an earthquake.
What is a fault?
100

These seismic waves can travel through all of the earth's layers.

What are P-waves (Primary waves)?

100
Where rocks first begin to move in an earthquake.
What is the focus?
100
This is the nick-name given to the scale used to measure an Earthquake's magnitude.
What is the Richter Scale?
100
Earthquakes are caused when too much of this has built up in rocks and they can no longer handle it.
What is stress?
200
At this type of fault, tectonic plates scrape past each other at a transform boundary.
What is a strike-slip fault
200

S-waves cannot travel through what state of matter?

What is liquids?

200
The name of the location directly above the focus.
What is the epicenter?
200

This instrument constantly records ground movement in the earth.

What is a seismometer?

200
A wall of water created when an earthquake occurs in the ocean floor.
What is a Tsunami?
300
Earthquakes occur along a fault in this layer of the earth.
What is the Lithosphere (Crust)?
300

These seismic waves occur on the surface and usually cause the most damage and have these two names.

What are Rayleigh and Love waves?

300
Most earthquakes occur along these areas because their slow movement causes large amounts of stress to build up over time.
What are plate boundaries?
300
The minimum number of stations needed to locate an earthquake's epicenter.
What is 3?
300

Most injuries and deaths from an earthquake occur from this factor.

What are collapse of buildings?

400

This type of fault is found where tension occurs and the footwall slides up.

What is a Normal Fault?

400

a series of low-frequency shock waves, somewhat like sound waves, traveling through the earth as a result of crustal movement.

What are earthquakes?

400

During an earthquake, the most damage occurs close to this point.

What is at the epicenter?

400
A seismic center closest to this location will detect seismic waves first.
What is the epicenter?
400

The largest tsunamis are created by this phenomenon.

What are landslides?

500

At a reverse fault, this block slides up.

What is the hanging wall?

500
The direction(s) that seismic waves travel when an earthquake occurs.
What is in all directions?
500

These are two things that scientists look for in predicting the possibility that an earthquake will strike an area in the near future.

What is a seismic gap, the history of earthquakes in that area and accumulated strain on the fault?

500

The Richter scale number is based on the this measurement. 

What is the size of the wave recorded on the seismometer?

500

The largest earthquake ever recorded occurred in this country.

What is Chile?

600

At convergent boundaries between oceans and continents, this feature occurs that often produced violent earthquakes and tsunamis

What is a subduction?

600

Forces or stresses that act to squeeze or crush an object or substance

What is compression?

600

This happens to P and S waves as they get farther from the epicenter.

What is get farther apart?

600

The Modified Mercalli scale measures this.

What is earthquake intensity?

600

The elastic rebound theory states this happens to rock when the stress is released in an earthquake

What is snap back into place

700

A oblique fault has movement in these directions.

What is a horizontal and vertical?

700

forces or stresses that act to pull an object or substance apart

What is tension?

700

Early warning systems using P and S wave arrival times are not effective if you are where?

What is close to the epicenter?

700

An earthquake that is 9 on the Richter scale is this many times more powerful than a 2.

What is the 10,000,000?

700

The safest place you can be in an earthquake.

What is outside away from buildings.

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