Earthquakes Test Prep

The point in Earth's interior where the energy release of an earthquake occurs is the ____.

• focus

• fault

• epicenter

• inner core

Tags

NGSS.MS-ESS3-2

When the force on rocks is great enough, they break, producing vibrations called_____________________.

• faults

• strains

• earthquakes

• stresses

A normal fault occurs where forces pull two blocks of rocks apart. At which kind of plate boundary does this occur? Why?

• convergent plate boundary-this is where plates are coming closer together.

• convergent plate boundary-this is where plates are moving apart

• divergent plate boundary-this is where plates are moving apart

• divergent plate boundary-this is where plates are coming closer together

Looking at the figure that shows world-wide earthquake distribution, the white lines represent plate boundaries. Which statement is true?

• Earthquakes always occur along plate boundaries

• Earthquakes rarely occur along plate boundaries

• Earthquakes most frequently occur along plate boundaries

• Earthquakes never occur along plate boundaries

Tags

NGSS.MS-ESS3-2

A break in Earth's lithosphere where one block of rock moves toward, away from, or past another is called a(n)__________________

• fault

• earthquake

• strain

• stress

The magnitude of an earthquake is measured by the__________.

• Richter scale

• modified Mercalli scale

• mojo discontinuity

• elastic limit

"We all got scared and ran outside. The house was ok, but our old shed fell over." This quote would help a researcher to place an earthquake on which scale?

• Modified Mercalli Scale

• Richter Scale

• Moment Magnitude Scale

• All of the above

Which factor does NOT affect the speed of a seismic wave?

• temperature

• chemistry of the rocks

• season of the year

• pressure

Secondary waves________when they hit the liquid outer core

• slow down

• stay the same

• stop

• speed up

Tags

NGSS.MS-PS4-2

A person located twice as far from an epicenter of an earthquake as another person will notice that the time between the arrival of the primary and secondary waves will be __________.

• the same

• larger

• reduced

• unnoticeable