Earth Science - 6A : Section Review Questions

What are two ways that stress in a rock can be relieved?

- crack - stretch, compress/bend

What kind of physical quantity is a stress? Which kind of stress is most likely to cause an earthquake?

- force exerted with in a material - Shear stress is the most likely to cause an earthquake.

What is an earthquake?

any shaking of the ground that is measured by seismic instrument

(True or False) Many geologists believe that it is magnetism that ultimately drives sea-floor spreading.

false; magma

What properties of rocks could contribute to a serious earthquake?

if the rock is stretchy or not

How might students like you help provide earthquake warnings?

join the Quake Catcher Network

What is happening at the convergent tectonic boundaries?

two tectonic plates are moving towards each other