You probably already know a lot about volcanoes 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 volcanoes. 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 volcanoes. 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. Volcanoes are located primarily at tectonic plate boundaries. (Agree / Disagree)
   
   
2. The Hawaiian Islands were formed as the result of volcanic eruptions. (Agree / Disagree)
   
   
3. The lava from all volcanoes has the same composition. (Agree / Disagree)
   
   
4. All volcanic eruptions are violent and spectacular. (Agree / Disagree)
   
   
5. Lava flows are the greatest hazard to humans during a volcanic eruption. (Agree / Disagree)
   
   
6. Volcanic soil is among the most fertile in the world. (Agree / Disagree)
   
   
7. Scientists can now pinpoint the time of volcanic eruptions with a high degree of accuracy. (Agree / Disagree)