You probably already know a lot about some of the processes that shape the Earth’s surface 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 the processes that shape the Earth’s surface. 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 the processes that shape the Earth’s surface. 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. Erosion is a major process in changing the Earth’s surface. (Agree / Disagree)
   
   
2. Gravity is the ultimate cause for all landslides. (Agree / Disagree)
   
   
3. Areas in the Arctic with permanently frozen soil do not experience any soil erosion. (Agree / Disagree)
   
   
4. The action of glaciers is the single most important process in modifying the Earth’s surface. (Agree / Disagree)
   
   
5. A wide curve in a river is known as a meander. (Agree / Disagree)
   
   
6. Huge ice sheets have covered large parts of the Earth in the past. (Agree / Disagree)
   
   
7. Sand dunes are formed by the wind. (Agree / Disagree)
   
   
8. Windblown soil can only be transported relatively short distances before it is eventually dropped. (Agree / Disagree)