Plate Tectonics, Earthquakes, and Volcanoes

the point on Earth's surface directly above an earthquake's starting point, or focus

a deep valley at the highest point of the mid-ocean ridge where plates are moving apart

A break in the Earth's crust where rock can slide past each other

What instruments do scientists use to record the shaking of the earth?

Every year there are only a handful of earthquakes all over the world

a mountain formed when molten rock is pushed to Earth's surface and builds up

What are plates named after? (Select all that apply)

What type of plate boundary is shown below:

The theory that Earth's crust and upper mantle is divided into plates are always moving

A chain of mountains that runs through the world's oceans

The Earth’s crust is constantly changing

Most earthquakes occur

What type of plate boundary is shown below

What type of plate boundary is shown below

the process in which liquid rock rises and becomes solid plates move farther and farther apart

Vibrations in Earth's crust, caused by the release of energy in a fault

Plate moves only a few centimeters a year

supercontinent that formed 300 million years ago and began to break up 250 million years ago

the point inside Earth where an earthquake begins

Powerful seismic wave that travel thousands of km in all directions; begins at earthquake focus