1. Levers and Pulleys

2. Lever and Pulley Jeopardy DefinitionsLevers Pulleys Simple Machines Investigations 10 pt 20 pt 30 pt 40 pt 50 pt Bonus

3. What is a fulcrum? The point where the lever arm moves.

4. What is a newton? The unit used to measure force

5. What is mechanical advantage? Reduces the force needed to lift a load and is the result of using a simple machine.

6. What is a pulley? A wheel with a grooved rim in which a rope can run to change the direction of the force that lifts the load.

7. What is a class-2 lever? When the load is in the middle and the fulcrum and effort are at the other end.

8. A pair of scissors is what class of lever? Class -2 Diagram on your white board

9. A hammer is what class of lever? A class-1 lever now diagram it on your white board

10. A pair of tweezers is what class of lever? Class-3 Now diagram the tweezers on your white board

11. A fishing rod is what class of lever A class-3 lever Diagram this lever on your white board

12. A nutcracker is what class of lever? Class-2 Diagram on your white board

13. What is a single-fixed pulley? Has a wheel that is attached to something above the load

14. Which Pulley system does not give advantage Pulley A

15. Which pulley systems will not work? A B C

16. Which pulley systems will work properly? W Y Z

17. What is a movable pulley Has a wheel that is attached to the load.

18. A cars tires when connected to the car are an example of what type of simple machine Wheel and axle.

19. In order to get the water to drain out of your bathtub you need this simple machine. What is an inclined plane

20. In the kitchen you use knives to chop and cut food. A knife is this type of simple machine What is a wedge?

21. We use light bulbs all over our houses. A light bulb is this type of simple machine. A screw.

22. Most of us use stairs everyday. A staircase it this type of simple machine. Inclines plane

23. On this day our question was: Does moving the effort effect the work? What is January 12, 2010

24. During this investigation we defined what a diagram was. What is Lever Diagrams

25. Our purpose of this investigation was to assemble and investigate one pulley systems. What is One Pulley Systems.

26. On this two-coordinate graph our position of our effort was 2.5cm what was our effort ? 9.8N

27. On the Measuring the Distance investigation this was our LOL. The benefits gained (making work easier) by using simple machines are always balanced by cost When the benefit out weighs the cost, the machine is a useful tool.

28. Bonus Question http://www.fossweb.com/modules3- 6/LeversandPulleys/index.html http://www.fossweb.com/modules3- 6/LeversandPulleys/index.html