6. Based on what you know about the world, and what you can see in the pictures, the most likely explanationwhy corners lose more chips than faces is: A) Pieces on corners can be hit from two sides, while the middle of a face can be hit from only one side; and, a piece on a corner isn’t supported by as many neighbors as a piece on a face. B) Erosion over time tends to make corners more-nearly square and less rounded. C) Pieces on corners want to jump off, so they do.
Feedback: Neighbors are useful in lots of ways. They can protect you from sneak attacks coming from behind or beside you, and hold you up in case you start to fall. Lose the guard and the support, and you’re more vulnerable. The same is true for erosion—something sticking out on a corner is more likely to get hit and less strongly held in place, and so is much more likely to break off.Correct Answer(s):A Points Earned: 1.0/1.0 7. Loose material can move downhill as it is pulled by gravity, eventually changing how steep slopes are and causing other changes. Some things you can correctly infer from looking at the pictures shown here are: Points Earned: 1.0/1.0 8. The pictures show evidence of where mud has moved, or hasn’t moved. The pictures also tell you something about when mud moves—Dr. Alley took the pictures when it wasn’t raining, and while he was taking them he did not get his bike tires buried by mud. A reasonable interpretation is: Points Earned: 1.0/1.0
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- Spring '12
- The Land, Correct Answer, Death Valley, geologist