Earthquake Vocabulary Practice

Gapfill exercise

Enter your answers in the gaps. When you have entered all the answers, click on the "Check" button.

   deformation      Elastic rebound      epicenter      fault      focus      gap hypothesis      Moho      P waves      S waves      seismic gap      Seismic Waves      seismogram      seismograph      Seismology      shadow zone   
1. is the study of earthquakes.
2. A is a break in the earth's crust along which blocks of the crust slide relative to one another due to tectonic forces.
3. The change in the shape of rock in response to stress is called .
4. is the sudden return of elastically deformed rock to its undeformed shape.
5. are waves of energy that travel trough the earth.
6. The fastest type of seismic wave that can travel through solids, liquids and gases are the .
7. The second-fastest type of seismic waves which cannot travel through materials that are completely liquid are the .
8. A is an instrument located near the surface of the Earth that records seismic waves.
9. A tracing of earthquake motioncreated by a seismograph is known as a .
10. The is the point on the Earth's surface directly above an earthquake's starting point.
11. The point inside the earth where an earthquake begins is called the .
12. The is the area along a fault where relatively few earthquakes have occurred.
13. A place within the Earth where the speed of seismic waves increase sharply; marks the boundary between the Earth's crust and mantle is the .
14. The is the area of the Earth's surface where no direct seismic waves from a particular earthquake can be detected.
15. The states that sections of active faults that have had relatively few earthquakes are likely to be the sites of strong earthquakes in the future.