8th science midterm vocab

The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary

• subduction

• compression

• tension

• shearing

The process by which molten material adds new oceanic crust to ocean floor

• seafloor spreading

• mid ocean ridge

• syncline

• fault

An undersea mountain chain where new ocean floor is produced

• mid ocean ridge

• trench

• earthquake

• epicenter

An undersea valley that represents one of the deepest part of the ocean

• ocean trench

• surface waves

• mid ocean ridge

• seafloor spreading

a supercontinent that existed during the late Paleozoic and early Mesozoic eras.

• pangea

• seismograph

• earthquake

• fossil

A break in Earth’s crust along which rocks move

• fault

• stress

• tension

• focus

a remnant, impression, or trace of an animal or plant of a past geological

age that has been preserved in Earth's crust

• fossil

• plate

• compression

• fault

sections into which the lithosphere is broken up

• plate

• fault

• stress

• shearing

A force that acts on rock to change its shape or volume

• stress

• tension

• compression

• subduction

Stress that stretches rock so that it becomes thinner in the middle

• tension

• stress

• shearing

• compression