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Across 1. two inclined planes placed back to back 5. any device that makes work easier 6. type of energy caused by the vibrations of particles 8. type of energy stored in atom's tension 10. type of pulley that is not attached to a surface and does move 12. any push or pull 13. type of energy that comes from electromagnetic rays 15. simple machine that is a flat surface tilted at an angle from the vertical 20. the force applied by the person to the machine is the ___ force 21. type of energy stored in atoms and molecules 23. the part of the wheel and axle that has the smaller radius 24. type of pulley that is attached to a surface and does not move 25. simple machine that is a rigid bar resting on a pivot 26. type of energy stored in the atom's nucleus 27. inclined plane wrapped around a cylinder 28. a wheel around which a cord passes

Down 2. type of energy stored in an object's height 3. type of energy in a moving object 4. Newton's ___ law states F=MA 7. type of force required for an object to move 9. a force must be applied to cause an object to move in the direction of the force 11. the force applied by the machine is the ___ force 12. machines make work easier by reducing the ____ needed 14. Newton's ___ law is the action/reaction law 16. resistance to change motion 17. type of energy that is the movement of heat 18. another name for the pivot of the lever 19. the part of a wheel and axle that is that has the larger radius 22. ability to do work 24. Newton's ___ law is the law of inertia