S8 - Chapter 7 Practice Vocab

Front

Hypothesis: continents are in constant motion

Back

continental drift

Front

Naturally preserved remains, imprints, or traces of organisms.

Back

fossil

Front

Middle layer of Earth between crust and core

Back

mantle

Front

Ancient supercontinent that formed today's continents.

Back

Pangea

Front

Event where magnetic field reverses direction

Back

magnetic reversal

Front

Mountain range on the ocean floor.

Back

mid-ocean ridge

Front

Today's magnetic field; magnets point north.

Back

Normal polarity.

Front

New oceanic crust forms at mid-ocean ridges as old crust moves away.

Back

Seafloor spreading.

Front

Material circulation due to temperature & density differences

Back

convection

Front

Two plates collide:

Back

Convergent plate boundary.