Exam 5: Earthquakes and Earths Interior

Felt earthquakes usually last for_______ .

_______has an average density of 2.7 g/cc.

The_______ is the site of initial rupturing associated with an earthquake.

Look at the below diagram What does the above diagram show as relating to locating an earthquake epicenter?

_______makes up the largest proportion of Earth by volume.

What is the value of long range earthquake prediction?

The ocean ridge systems that make up the major divergent plate boundaries are a source of frequent_______ .

In the open ocean, tsunamis travel at about the same speed as a_______ .

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

_______averages roughly 7 km thick.

Oceanic crust is composed primarily of_______ .

Which of the following is determined by measuring the amplitude of waves recorded from an earthquake?

P waves_______ .

Which one of the following statements is correct?

The earliest seismographs were designed by the Chinese nearly 2000 years ago to measure_______ . One of these featured gold balls that dropped into the mouths of statues of gold frogs.

In the 1906 San Francisco earthquake, much of the damage was due to fires because _______.

Long term earthquake prediction is based on_______ .

Which of the following is determined by making direct observations in the area affected by an earthquake?

If you are on a beach, you might recognize that a tsunami is approaching because_______ .

An earthquake magnitude scale is a measure of_______ .