Answer the following questions.

1. What is the use of an incline?


2. At what cost does this benefit come from?


3. How are inclines used in buildings?


4. How are inclines used when building roads?


5. What is a wedge?


6. What can wedges be used for?


7. Name three tools that make use of a wedge.


8. What are screws?


9. What kinds of animal structures are wedge-shaped?