Simple Machines Combination Notes Name: ________________________ 1. ____________ is when an applied __________ Illustration of Work causes an object to __________ in the direction of the ____________. 2. Work is done only when an object __________ Examples of Work in the ________ ____________ of the force that is being applied. 3. Work = __________ X ____________ 4. A ____________ is a device that makes Examples of Machines ________ easier by changing the ___________ or ____________ of a ____________. 5. ____________ machines have ________ or more ____________ machines. 6. There are ________ types of simple machines. 1 Simple Machines Combination Notes Name: ________________________ 7. Inclined Plane Illustration of Inclined Plane a. ____________, ___________ surface b. Makes work easier because __________ ________________________________ ________________________________ 8. Describe an example of when you used an inclined plane to make work easier __________________________________________________________________ __________________________________________________________________ 9. Wedge a. Inclined plane that __________ Illustration of Wedge b. ________ inclined planes ______________ c. _________ at one end than at the other d. Makes work easier because ______________________________________ _____________________________________________________________ 10. Describe an example of when you used a wedge to make work easier ________ __________________________________________________________________ 2 Simple Machines Combination Notes Name: ________________________ 11. Screw Illustration of a Screw a. ____________ ____________ wrapped around a ____________ with a _________ at the tip. b. Makes work easier because ______________________________________ _____________________________________________________________ c. __________ threads on a screw make it __________ to turn d. A screw might be a complex machine because it has both an ____________ ____________ and a ____________. 12. Lever a. Made up of a __________ that __________ at a fixed point called a ____________. b. ____________ applied to a lever is called the ____________. c. ____________ moved is the ____________. d. ____________ classes of levers. 13. Levers – First Class Illustration of a First Class Lever In a first class lever, the ____________ is in the ____________ and the ____________ and ____________ is on either side. Be sure to label the fulcrum, effort, and load 3 Simple Machines Combination Notes Name: ________________________ 14. Levers – Second Class Illustration of a Second Class Lever In a second class lever, the ____________ is at the ____________, with the ____________ in the ____________. 15. Levers – Third Class Be sure to label the fulcrum, effort, and load Illustration of a Third Class Lever In a third class lever, the ____________ is at the ____________, with the ____________ in the middle. Be sure to label the fulcrum, effort, and load 16. Describe an example of when you used a lever (first, second, or third class) to work easier ________________________________________________________ __________________________________________________________________ 17. Wheel and Axle a. Consists of two ____________ objects of Illustration of a Wheel and Axle ____________ sizes. b. A ________ is connected to a _________. c. __________ is larger than the __________ d. Makes work easier because ______________________________________ _____________________________________________________________ 4 Simple Machines Combination Notes Name: ________________________ 18. Describe an example of when you used a wheel and axle to make work easier __________________________________________________________________ __________________________________________________________________ 19. Pulley Illustration of a Pulley a. Wheel and axle with a _________ around the outside. b. A pulley needs a ________, ________ or ________ around the groove to make it work. c. Pulley systems can consist of one or more ________ pulleys, one or more ____________ pulleys, or both __________ and ____________ pulleys. d. Makes work easier because ______________________________________ _____________________________________________________________ 20. Describe an example of when you used a pulley to make work easier ____________ __________________________________________________________________ 5