Earthquakes & Volcanoes

There are _____ layers of the Earth.

• 1

• 2

• 3

• 4

These are the two types of crusts/tectonic plates.

• oceanic and continental

• lower and upper

• ocean and upper

• pizza and subway

Earthquakes and volcanoes are most likely found at these locations.

• at plate boundaries

• in the middle of continents

• in the middle of plates

• in oceans

Two tectonic plates collide at a _______ plate boundary.

• convergent

• transform

• divergent

What is the area called where two tectonic plates meet?

• mantle

• plate boundary

• focus

• convection current

This landform can occur at a divergent plate boundary.

• ocean trench

• mid-ocean ridge

• transform boundary

• tall mountain

The movement of the tectonic plates is caused by

• the rotation of the Earth

• the gravity of the iron-nickel core

• convection currents in the mantle

• the Moho discontinuity

___________ is the hypothesis that new sea floor is created at mid-ocean ridges.

• plate tectonics

• seismograph

• sea-floor spreading

• faults

True or false: At a convergent boundary, oceanic crust will sink below continental crust.

• true

• false

This is a device that is used to detect and record seismic waves.

• telegraph

• sonar

• radio

• seismograph