Simple Machines

5. the force that moves an object over a distance by overcoming a resistance force
6. a well-substantiated explanation of some aspect of the natural world
7. the line on a graph that runs vertically through 0
10. A machine consisting of 2 or more simple machines operating together
11. the ratio of the output force to the input force
12. a pivot point around which a lever turns
13. the result of using a force to move an object a distance
15. the variable that you measure in an experiment

1. an idea or explanation you test through experimentation
2. the variable that is changed or controlled in an experiment
3. a push or pull upon an object
4. The force that has to be overcome by the effort force to perform work
8. any of the various elementary mechanisms considered as the elements of which all machines are composed of
9. a generalized rule to explain a body of observations in the form of a verbal or mathematical statement
14. the line on a graph that runs horizontally through 0