ground movements that occur when blocks of rock in

 Earth move suddenly and release energy

vibrations that travel through Earth carrying the energy

 released during an Earthquake

states that Earth’s surface is made up of giant moving

 slabs called tectonic plates

 movement of matter due to difference is density, heated 

 fluid rises and cooled fluid sinks

What is the point on Earth's surface directly above the focus of an earthquake?

What are tectonic plates?

A break in Earth's crust is called a...?

At which type of boundary are earthquakes most common

Where does most of Earth’s volcanic and earthquake activity occur?

Seismic waves that can only travel through soilds

The layer of the Earth that is liquid iron and nickel

The least dense layer of the Earth

The center of the Earth that is dense and solid is the outer core.

The mantle is the thickest layer of the Earth.

At one time all the continents formed one big continent called Pangea.

What is something you should have in an emergency earthquake kit?

What type of boundary is this?

What type of boundary is this?

What type of boundary is this?

What is this machine?