1 / 38

Simple Machines

Simple Machines. Common Simple Machines…. First, rank the following words from 0-5 (0= you have never heard of this word & 5= you know the word VERY well). Second, explain what the following terms mean in your own words: Machine Simple machines Work Force Work input/Work output Lever.

anakin
Télécharger la présentation

Simple Machines

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Simple Machines

  2. Common Simple Machines…

  3. First, rank the following words from 0-5 (0= you have never heard of this word & 5= you know the word VERY well). Second, explain what the following terms mean in your own words: • Machine • Simple machines • Work • Force • Work input/Work output • Lever -Pulley -Wheel & axle -Inclined plane -Wedge -Screws -Compound machine

  4. The Six Simple Machines

  5. The Six Simple Machines

  6. The Six Simple Machines

  7. The Six Simple Machines

  8. The Six Simple Machines

  9. The Six Simple Machines

  10. The Six Simple Machines

  11. Machine YOURS: TEXTBOOK: A machine is a device that makes work easier by changing the size or direction of a force. Examples: wheelchair, scissors, chopsticks

  12. Simple Machines YOURS: TEXTBOOK: A machine or simple device without moving parts. Examples: lever, pulley, wheel & axle, inclined plane, wedge, screw

  13. Work YOURS: TEXTBOOK: Work is the transfer of energy to an object by using a force that causes the object to move in the direction of the force. Work is done on an object if two things happen: 1) the object moves as a force is applied, 2) the direction of the object’s motion is the same as the direction of the force. Examples: pushing a ball up a hill

  14. Work or Not Work? OR OR YES NO YES NO

  15. Force YOURS: TEXTBOOK: A push or a pull exerted on an object in order to change the motion of the object; force has size and direction. Examples: people, bulldozer, static electricity

  16. Work Input/Work Output YOURS: TEXTBOOK: Work input is the work done on the machine. Work out put is the work done by the machine. Examples: opening a paint can

  17. Compound Machine YOURS: TEXTBOOK: A machine made up of more than one simple machine. Examples: manual can opener

  18. The Six Simple Machines

  19. The Six Simple Machines

  20. Lever YOURS: TEXTBOOK: A lever is a simple machine that has a bar that pivots at a fixed point, called a fulcrum. Examples: first-class lever (see saw), second-class lever (wheelbarrow or soda bottle opener), third-class lever (lifting weights or hammering a nail)

  21. Three Classes of Levers

  22. The Six Simple Machines

  23. Pulley YOURS: TEXTBOOK: A simple machine that has a grooved wheel that holds a rope or a cable. Examples: fixed, moveable, block and tackle

  24. Types of Pulleys:

  25. The Six Simple Machines

  26. Wheel & Axle YOURS: TEXTBOOK: A simple machine consisting of two circular objects of different sizes. Examples: car’s wheel & axle, faucet

  27. The Six Simple Machines

  28. The Six Simple Machines

  29. Wedge YOURS: TEXTBOOK: A simple machine that is made up of two inclined planes that move; often used for cutting. Examples: knife, axe, door stop

  30. The Six Simple Machines

  31. Screw YOURS: TEXTBOOK: A simple machine that consists of an inclined plane wrapped around a cylinder. Examples: screw, light bulb

  32. 1. What would be easier, a steep inclined plane or a shallow inclined plane?

  33. 2. What would be easier, a wide wedge or a skinny wedge?

  34. 3. What would be easier, a long, skinny screw or a short, fat screw?

  35. 4. What would be easier, the fulcrum in the middle or the fulcrum to one side of the lever?

  36. 5. What would be easier, a short axle or a long axle?

  37. 6. What would be easier, a wide rope or a skinny rope?

More Related