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Forces. Doing Work. Levers and Pulleys. More Simple Machines. Variety. $ 1. $1. $1. $1. $1. $2. $2. $2. $2. $2. $5. $5. $5. $5. $5. $10. $10. $10. $10. $10. $20. $20. $20. $20. $20. Pushes and pulls. What does a force do?. Changing the motion of an object.

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  1. Forces Doing Work Levers and Pulleys More Simple Machines Variety $1 $1 $1 $1 $1 $2 $2 $2 $2 $2 $5 $5 $5 $5 $5 $10 $10 $10 $10 $10 $20 $20 $20 $20 $20

  2. Pushes and pulls.

  3. What does a force do?

  4. Changing the motion of an object.

  5. What is work?

  6. The pulling force between two objects, such as you and Earth.

  7. What is gravity?

  8. How much pull gravity has on an object.

  9. What is weight?

  10. Makes apples fall from a tree.

  11. What is gravity?

  12. A force that changes the motion of an object.

  13. What is work?

  14. An example is a rock sitting on the top of a hill.

  15. What is an example of stored energy?

  16. The ability to do work.

  17. What is energy?

  18. A type of energy that moves from one object to another.

  19. What is energy of motion?

  20. A ball player using a bat to hit a ball.

  21. What is an example of work?

  22. The fulcrum, load, and force.

  23. What are the three parts of a lever?

  24. The object being lifted or moved.

  25. What is the load?

  26. Makes work easier.

  27. What does a machine do for people?

  28. Changes the strength of a turning force.

  29. What does the wheel and axle do to make work easier?

  30. Helps to raise a sail on a sailboat. (levers and pulleys)

  31. How can a pulley make work easier?

  32. A ramp.

  33. What is an example of an inclined plane?

  34. Uses force to raise an object or split objects apart.

  35. What does a wedge do to make work easier?

  36. Ridges of the screw.

  37. What are threads?

  38. A simple machine wrapped around a screw.

  39. What is an inclined plane?

  40. A wedge used by farmers.

  41. What is a plow?

  42. Two or more simple machines put together.

  43. What is a compound machine?

  44. A doorknob.

  45. What is an example of a wheel and axle?

  46. Newtons.

  47. How do scientists measure weight?

  48. Helped to lift the heavy stones to the top of the ancient pyramids of Egypt.

  49. A pulley.

  50. Lets you change the direction of a force.

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