Unit 3- Lessons 3 and 4

On which type of plate would you find thinner, DENSER rock?

• Oceanic plate

• Lithosphere plate

• Continental plate

• Rocks on all plates have the same thickness and density

What type of stress causes rock to separate and eventually break?

• Compression

• Tension

• Shear

• None

What causes an earthquake to happen?

• Energy is transferred to rock layers from convection currents in the oceans and the atmosphere.

• Rocks deform slowly as a result of physical stress.

• Large amounts of rock suddenly shift downward when large holes form underground.

• Rocks along a fault move suddenly and release energy.

Tags

NGSS.MS-ESS2-3

What is the break in a body of rock along which one block slides relative to another called?

• fault

• earthquake

• epicenter

• focus

Why do most earthquakes take place at tectonic plate boundaries?

• The rock in the interior of a tectonic plate is stronger, so it does not deform.

• Earthquakes take place where the motion of tectonic plates transfers energy to rock

• Earthquakes take place when one plate moves over another plate, which happens only at plate boundaries.

• Earthquakes can only occur at places where magma can reach the surface and transfer energy to rocks.

Tags

NGSS.MS-ESS3-2

What can cause a chain of volcanic islands to form far from plate boundaries?

• subduction

• folding

• rifting

• hot spots

How does distance from the epicenter of an earthquake change the earthquake’s effects?

• The strongest effects are usually felt in a line extending north and south from the epicenter.

• The strongest effects are usually felt in a ring surrounding the epicenter with a radius of several miles.

• The strongest effects are usually felt near the epicenter

• The strongest effects are usually felt farthest from the epicenter.

What happens at a tectonic plate boundary?

• An oceanic plate becomes a continental plate.

• Continents get smaller as a result of subduction.

• Sea-floor spreading takes place at all tectonic plate boundaries.

• Two tectonic plates interact with each other.

Which type of stress is most likely to occur at convergent plate boundaries?

• tension

• compression

• shear

• faulting

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Why do folded mountain belts sometimes form at convergent plate boundaries?

• Because convergent plate boundaries occur above hot spots.

• Because rock is compressed and forced upward

• Because the rock is stretched apart and breaks, which allows magma to rise to Earth’s surface.

• Because subducted oceanic lithosphere melts and rises as magma to Earth’s surface.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1