The upper part of the mantle consist of two layers. What are the two layers?

Of Earth's layers, the thinnest layer is

The theory that Earth's crust is divided into constantly moving plates is

What allows the large, stiff plates of the lithosphere to move?

At a divergent boundary

A chain of mountains beneath the ocean is

A break in Earth’s crust where rock on one side moves in relation to rock on the other side.

The layer of Earth that extends from the bottom

of the mantle to Earth’s center.

What can form when two continental plates collide?

Which ocean is growing wider each year?

What type of boundary is the mid ocean ridge on?

When pressure builds up along a fault what happens?

An earthquake occurs on the ocean floor causing the water to swirl above creating a large wave. This wave is

What type of boundary is the San Andreas Fault on?

A boundary where two plates meet is called a

What happens when two plates slip past each other?

As plates separate, hot rock from the mantle moves up. The melted rock cools and forms new crust. This process along the mid-ocean ridge is called….

What is the point on Earth’s surface directly above the focus of an Earthquake?