Plate Tectonics Review

The Hawaiian Islands formed when the Pacific plate moved over

The largest landmasses are ________.

The crust that makes up the ocean floor is the

What is the name of the giant landmass the continents once formed?

A deep canyon on the ocean floor is a

The movement of a gas or liquid caused by differences in temperature is a

What is the process of adding new crust on the sea floor

How many continents are there?

Two plates move toward each other at a

The fossil animal that is used to support the idea of continental drift is____.

What is the name of a giant landmass?

Scientists estimate that Earth's age is about

The movement of tectonic plates at a fault is a cause of

The oldest rocks found on the ocean floor are about

The deep crack running down the center of the Mid-Atlantic Ridge is a

Features formed at divergent boundaries are

Which letter represents the oldest sea floor

Scientists think that the movement of Earth's tectonic plates are caused by convection currents in the

Scientists use the magnetic properties of some minerals as evidence of

What does the theory of continental drift state.

Who first stated the theory of continental drift?

Many trenches are located along the Ring of Fire

The idea that Earth's crust is made up of separate plates that float on the upper mantle is the theory of

Where is oldest ocean crust?

Underwater mountain ranges are called

Scientists have identified about

The place in which old crust is pushed down into a trench is a