Exam 8: Earthquakes and Earths Interior

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

When an earthquake occurs, energy radiates in all directions from its source. The source is also referred to as the ________.

The dense core of Earth is thought to consist predominantly of ________.

An earthquake of magnitude 7.5 releases about how much more energy than one of magnitude 5.5?

Tsunamis are caused by sudden displacement of large volumes of seawater.

Most of our knowledge about Earth's interior comes from ________.

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

________ is the layer of warm rock below the crust and uppermost mantle that readily deforms and flows plastically.

The time between the first P-wave and S-wave arrivals is a measure of the distance from a receiving station to the epicenter of the earthquake.

Would earthquakes of similar magnitudes in different regions of the Earth cause approximately the same levels of damage necessarily? In your explanation, consider both geologic and human-induced factors.

Unconsolidated, water-saturated soils or sediments provide good foundation materials for buildings and other structures.

What is thought to be the material state (liquid, solid, gas) and elemental composition of Earth's outer core?

The position on Earth's surface directly above the earthquake source is called the ________.

The lithosphere is defined as ________.

The ________ magnitude scale is a measure of the energy released. It does not directly measure the extent of building damage.

The crust and mantle are solids; the inner core is thought to be solid.

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

The amount of destruction caused by earthquake vibrations is affected by ________.

________ refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.

The mechanism by which rocks store and eventually release energy in the form of an earthquake is termed ________.