Ch. 6 Plate Tectonics

Match it! Select the correct answer from the pull down...Good luck!

The process of __________________ continually adds new crust to the ocean floor along both sides of the mid-ocean ridge.

In sea-floor spreading, molten material rises from the mantle and erupts

What is Pangaea?

What technology did scientists use in the mid-1900s to map the mid-ocean ridge?

Most geologists think that the movement of Earth's plates is caused by

The geological theory that states that pieces of Earth's lithosphere are in constant, slow motion is the theory of

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as

The hypothesis of _______________ was that all the continents once were joined as a single supercontinent and have since drifted apart.