3.  Rube Goldberg was born in San Francisco California on July 4 1883. He died on December 7 1970.  Rube Goldberg was most well know for his cartoons but he also was a sculptor, engineer, and an inventor.

4.  Is a simple device that uses no moving parts.  Ex: lever, pulley, inclined plane, wedge, screw, and a wheel and axle.  A simple can be anything that is used to make a job easer that does not have any moving parts.

5. A rube Goldberg contraption is a compound machine. A compound machine is two or more simple machines put together. Contraption is anything that is made to make a job easier.

6. Pencil sharpener

8. http://www.youtube.com/watch?v=OAQ_c1C1JfQ