1. Where do you see cracks? 2. In the paper experiment, when did the paper tear? 3. Why did the paper tear that way? 4. What is concrete made of? 5. What is one thing that causes cracks in dams?
2. In the paper experiment, when did the paper tear?
3. Why did the paper tear that way?
4. What is concrete made of?
5. What is one thing that causes cracks in dams?
