Ch. 8 Earth Science Test

Earthquakes are usually associated with ___

Unconsolidated sediments are saturated with water quakes can turn stable soil into fluid thru

The location of Earth's surface above the point where an earthquake starts is the ___

Which one of the following statements is true about P waves?

The difference in the ___ of P waves and S waves is used to locate a quake's epicenter

The relatively soft, weak layer of rock below the lithosphere is the ____

The Moho is _____

How far is the station from the quake's center if the S wave arrives 4 minutes after the P wave

The adjustment of materials that follow a major earthquake often generate smaller quakes called

Which of the following causes earthquakes?

Which of the following areas would most likely be the safest during a major earthquake?

During an earthquake, the ground surface ___

When a quake occurs, energy radiates in all directions from its source, which is called the ___

Tsunamis are ___

An earthquake's magnitude is a measure of the ____.

The slow continuous movement that occurs along some fault zones is referred to as ___

What is the minimum number of seismic stations needed to determine the epicenter location

A fault is____

The amount of shaking produced by an earthquake at a given location is called the ___

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Small foreshocks that precede a major earthquake occur ____

Which seismic waves travel most rapidly?

The seismic waves that travel through Earth's interior are _____ waves

most of the info about Earth's interior was obtained by studying ____

According to the fig. when will the first P wave arrive, if a quake epicenter is 1800 km away

Determine the difference in travel-times between the P wave and S wave at 4000 KM away

An area along a fault where there has not been a quake in a long time is called a(n) __

A travel-time graph can be used to find the ____.

Through which Earth layer are S waves NOT transmitted?

Earth's inner core is solid because of ____

The springing back of rock after it has been deformed is known as ____

Movements that follow a major earthquake often produce smaller earthquakes called ____

An earthquake's epicenter is _____

The scale most widely used by scientists for measuring earthquakes is the ___

What layers of Earth make up the lithosphere?

What instrument records earthquake waves?

Overall, which seismic waves are the most destructive?

Which seismic waves compress and expand rocks in the direction the waves travel?

The trace that records an earthquake from seismic instruments is called a ___

Which of these is used in an attempt to make short-range predictions of when quakes will occur?

Earth's thin, rocky outer layer is its ___

Which of the following affects the amount of destruction caused by earthquake vibrations?

The San Francisco earthquake of 1906 occurred along what fault?

Why do earthquakes often cause damaging fires?