earthquakes and mountain buliding

With regard to earthquakes, what distinguishes intensity from magnitude?

Magnitude is a measure of how much energy is released by the earthquake, but intensity is a rough measure of local shaking.

Where is the epicenter of an earthquake?

On Earth's surface, directly above the hypocenter.

Which kind of seismic wave is fastest moving?

P waves

Three of the following statements are wrong. One is correct. Which of the following statements is correct?

S waves travel through solids, but only P waves travel through liquids.

On a typical seismogram, ________ will show the highest amplitudes.

Surface waves

Which of the following terms means "weak sphere"?

Asthenosphere

A(n) ________ is a structure in which the oldest rocks are located in the center.

anticline

The distance between a seismological recording station and the earthquake source is determined from the ________.

arrival times of P waves and S waves

When an earthquake occurs, energy radiates in all directions from its source region, called the ________, the spot in Earth's crust where a fault slips.

hypocenter

Earth's core is interpreted to consist mainly of ________.

iron and nickel

The ________ is the cool, brittle, outer layer of Earth that includes the crust and uppermost mantle.

lithosphere

A Richter magnitude 8 earthquake is ________ times greater than a Richter magnitude of 7.

10

Approximately how much more energy is released in an earthquake of Richter magnitude 6.5 than in a magnitude 5.5 earthquake?

32

The earthquake belt with the greatest level of activity is the ________.

Circum-Pacific Belt

________ is when a rock "snaps back" to its original stress-free form after an earthquake.

Elastic rebound

Which one of the following statements is true about the crust?

It is the thinnest of the major subdivisions.

Oceanic crust is primarily composed of ________.

basalt and gabbro

Most orogenesis occurs along ________ plate boundaries.

convergent

The record of an earthquake obtained from a seismic instrument is a(n) ________.

seismogram

A ________ is an instrument that is used to record earthquake vibrations.

seismograph