Front

The idea that continents move around on Earth's surface.

Back

continental drift

Front

An ancient supercontinent made of the landmasses we know as our present-day continents.

Back

Pangaea

Front

A theory explaining how the tectonic plates (or lithosphere plates) on earth's surface move

Back

Plate Tectonics

Front

A hypothesis that new molten material is erupting from mid ocean ridge.

Back

sea floor spreading

Answer explanation

a hypothesis that new molten material is erupting from mid ocean ridge.

the plates where these plates meet are called plate bboundaries

Front

The plates where these plates meet are called plate boundaries.

Back

lithosphere

Front

oceanic plates

Back

when an oceanic plate collides with another plate, either continental or oceanic, subduction of the denser plate occurs

Front

A valley in the ocean created when one lithosphere plate subducts under another

Back

Deep-ocean Trench

Front

alfead wenger is the scientist created the idea of ___

Back

pangaea

Front

were discovered during naval mapping of the ocean floor

Back

mid-ocean ridge

Front

scientist discovered that the oldest ocean floor was ________ from the mid ocean ridge

Back

farthest