| A | B |
| seismic waves | when an earthquake occurs, energy is released in the form of ____ |
| secondary waves | kind of wave that causes particles in rocks to move at right angles to the direction of the wave |
| primary waves | kind of wave that causes particles in rocks to move back and forth in the same direction |
| epicenter | the point on Earth's surface directly above the earthquake's focus |
| surface waves | these waves cause the most destruction |
| primary waves | these waves are the fastest |
| solid, dense inner core | the center of the Earth is a .... |
| mantle | Earth's largest layer is _______ |
| area | the Richter scale measures ____ of an earthquake |
| considerable damage | an earthquake that measured X on the modified Mercali scale causes |
| tsunami | water along the shoreline moving rapidly to the sea, exposing a land that is usually under water is a sign of a ______ |