Across
- 3. A ramp
- 4. One or two parts and make work easier
- 6. To use a force to move an object
- 11. The use of scientific knowledge to invent tools and new ways of doing things
- 12. A step-by-step method used to solve a problem
- 13. A round wheel attached to a post
Down
- 1. A machine that changes the direction of motion of an object to which a force is applied
- 2. Two slanted sides that end in a sharp edge
- 5. The first working product that uses a design
- 7. To look for facts about something
- 8. An inclined plane wrapped around a center post
- 9. Made up of simple machines to work together and complete bigger jobs
- 10. A stiff bar that rests on a support