You probably already know a lot about earthquakes from your own general knowledge. You may have picked up this background from your own reading, from TV, from movies, or from other areas. Below you will find a series of statements concerning earthquakes. Not all of them of them are true. All of the concepts in the statements will be fully explored in the lessons, but before you review the lessons, let's see what you already know about earthquakes. Carefully think about each statement. Then decide, to the best of your knowledge, whether you agree or disagree with each statement. At the end of the unit, you'll be able to review these statements again to see how much you have learned.

1. Earthquakes can occur anywhere, although they are more likely in certain areas. (Agree / Disagree)
   
   
2. Earthquakes are caused by the rapid release of stored energy in rocks. (Agree / Disagree)
   
   
3. Earthquake waves all travel at the same speed. (Agree / Disagree)
   
   
4. Most earthquakes occur at fairly shallow depths below the Earth’s surface. (Agree / Disagree)
   
   
5. Only one data recording station is necessary to accurately determine where an earthquake has occurred. (Agree / Disagree)
   
   
6. Most large earthquakes occur around the rim of the Pacific Ocean. (Agree / Disagree)
   
   
7. The density of rocks on the Earth’s surface is less than the density of material in the Earth’s interior. (Agree / Disagree)
   
   
8. The strongest earthquakes also cause the most fatalities. (Agree / Disagree)
   
   
9. Indonesia has more high fatality earthquakes than any other country in the world. (Agree / Disagree)
   
   
10. Tsunamis are large, destructive waves that can pass virtually unnoticed in the open ocean. (Agree / Disagree)
    
    
11. Scientists are now able to predict when an earthquake will occur with an accuracy ranging from a few hours to a few days. (Agree / Disagree)