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Jeopardy

Learn about simple machines, their functions, and how they make work easier. Explore the different types of pulleys, levers, and other devices. Discover the concept of work and the factors that affect its efficiency.

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Jeopardy

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  1. Jeopardy

  2. Short Answer Multiplechoice Work and Machine Matching 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400 500 500 500 500

  3. machine 100 machine What is a device that makes work easier by changing the size or direction of force?

  4. MC 100 b. inclined planes and levers • Which of the following are simple machines • used by the Egyptians to build pyramids? • a. screws and screwdrivers • b. inclined planes and levers • plows and axes • wheels and axles

  5. Matching 100 f. first-class lever • Match each item with the correct statement. • a. pulley f. first-class lever • b. wheel and axle g. second-class lever • c. fulcrum h. third-class lever • d. lever i. compound machine • wedge j. inclined plane • a lever where the fulcrum is between • the input force and the load

  6. Short Answer 100 fixed, movable, and block and tackle Name the three types of pulleys.

  7. Machine 200 friction What causes machines not to be 100% efficient?

  8. MC 200 C. Less force is needed to move the object over a longer distance. • How does a ramp make lifting a heavy • object easier? • The object is moved over a shorter • distance. • The ramp increases the amount of work • you do. • Less force is needed to move the object • over a longer distance. • More force is needed to move the object • over a longer distance.

  9. Match 200 g. second-class lever • Match each item with the correct statement. • a. pulley f. first-class lever • b. wheel and axle g. second-class lever • c. fulcrum h. third-class lever • lever i. compound machine • wedge j. inclined plane • a lever where the load is between • the input force and the fulcrum

  10. The location of the fulcrum or what is located in the middle What is the main difference between the three classes of levers? Short Answer 200

  11. Machine 300 The object must move and in the same direction as the force. What two things must happen for work to be done?

  12. MC 300 d. ramp • Which of the following is NOT a wedge? • knife c. chisel • b. plow d. ramp

  13. Match 300 i. compound machine • Match each item with the correct statement. • a. pulley f. first-class lever • b. wheel and axle g. second-class lever • fulcrum h. third-class lever • lever i. compound machine • wedge j. inclined plane • a machine that is made of two or more • simple machines

  14. Short answer 300 He is using a first-class lever. The hammer pivots on a fulcrum as the claw pulls out the nail. Pat is removing nails from a piece of wood with the claw end of hammer. What type of simple machine is he using? Explain.

  15. Machine 400 work What is it called when a force causes an object to move in the direction of the force?

  16. MC 400 c. the direction of a force • What does a fixed pulley change? • the speed of a force • b. the size of a force • c. the direction of a force • d. the timing of the force

  17. Match 400 h. third-class lever • Match each item with the correct statement. • a. pulley f. first-class lever • b. wheel and axle g. second-class lever • c. fulcrum h. third-class lever • d. lever i. compound machine • wedge j. inclined plane • a lever where the input force is • between the fulcrum and the load

  18. Short Answer 400 A pair of scissors is made of two simple machines. The blades of the scissors are wedges. The blades are also two first-class levers that are fastened together and pivot on a fulcrum. Explain why a pair of scissors is a compound machine.

  19. Machine 500 kinetic A moving object has what kind of energy?

  20. MC 500 a. inclined plane • What type of simple machine can a • screw be considered? • inclined plane • lever • wheel and axle • d. pulley

  21. Match 500 b. wheel and axle Match each item with the correct statement. a. pulley f. first-class lever b. wheel and axle g. second-class lever c. fulcrum h. third-class lever d. lever i. compound machine e. wedge j. inclined plane a machine consisting of two circular objects of different sizes

  22. Short Answer 500 Sample answer: The backpack is not moving in the same direction as the force being applied to it. When you are carrying your backpack to class at a constant speed, you are not doing work. Why not?

  23. Final Jeopardy!!!!! Two people are climbing stairs to reach the 6th floor of a building. One takes a set of steep stairs and the other takes a spiral staircase. Which person is doing more work. Explain. Neither, they are both doing the same amount of work. The spiral staircase is increasing the distance, so that person is using less force, but is doing the same amount of work as the person taking the steep staircase.

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