Simple Machines PowerPoint

4. -Nice neat notes that are legible and use indentations when appropriate. -Example of indent. -Skip a line between topics -Make visuals clear and well drawn. Please label. Effort Arm Resistance Arm

5. • RED SLIDE: These are notes that are very important and should be recorded in your science journal. • BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly. Copyright © 2010 Ryan P. Murphy

7. • http://sciencepowerpoint.com/

8.  Machine: Anything that helps you do work.

9.  Machine: Anything that helps you do work.  Work = Force x Distance

10. • Which of the following is not something machines do. – B.) Machines can change the direction of the force you put in. ( ex. A Car jack) – C.) Machines create energy in order to complete a force. (ex. reactor) – D.) Machines can increase the speed of the force. (ex. Bicycle)

11. • Which of the following is not something machines do. – A.) Machines can make the force you put into a machine greater. (ex. Pliers) – B.) Machines can change the direction of the force you put in. ( ex. A Car jack) – C.) Machines create energy in order to complete a force. (ex. reactor) – D.) Machines can increase the speed of the force. (ex. Bicycle)

17. • Match the correct work of machines to the picture. – A.) Machines can increase the speed of the force. – B.) Machines can make the force you put into a machine greater. – C.) Machines can change the direction of the force you put in.

24. • Law Conservation of energy: energy cannot be created or destroyed.

25. • Law Conservation of energy: energy cannot be created or destroyed. – Simple machines generally require more work / energy to complete a task. Example

42.  Efficiency: A measure of how much more work must be put into a machine than you get out of the machine.

43.  Efficiency: A measure of how much more work must be put into a machine than you get out of the machine.  The efficiency of a machine will always be less than 100%.

44. • Efficiency: A measure of how much more work must be put into a machine than you get out of the machine. – The efficiency of a machine will always be less than 100%. – If there was no friction, the best you could hope for is an efficiency of 100% meaning work in = work out.

64.  One Newton is the amount of force required to give a 1 kg mass an acceleration of 1 m/s/s. Copyright © 2010 Ryan P. Murphy Learn more: Force. http://www.physicsclassroom.com/class/newt laws/u2l2a.cfm

73. • Set-up of challenge. – Move pipes from the rear to the front before the table moves. – How efficient can your group work?

83. • Find the MA of the following. • The work input was 2, and the output was 18.

84. • Find the MA of the following. • The work input was 2, and the output was 18.

85. • Find the MA of the following. • The work input was 2, and the output was 18. FI FO

88. • Find the MA of the following. • The work input was 2, and the output was 18. FI FO 2 18

89. • Find the MA of the following. • The work input was 2, and the output was 18. FI FO 2 18 = 9 MA

90. • Find the MA of the following. • The work input was 2, and the output was 18. FI FO 2 18 = 9 MA Mechanical Advantage: Learn More at… http://www.wisc- online.com/objects/ViewObject.aspx?ID=ENG20504

92. 12 N 6 N

93. 12 N 6 NFO FI

94. 12 N 6 NFO FI

95. 12 N 6 NFO FI

96. 12 N 6 NFO FI 6N 12N

97. 12 N 6 NFO FI 6N 12N = 12 MA

99. 40 N 20 N

100. 40 N 20 N FO FI

101. 40 N 20 N FO FI

102. 40 N 20 N FO FI 20N 40N

103. 40 N 20 N FO FI 20N 40N = 2 MA

104. 40 N 20 N FO FI 20N 40N = 2 MA

106. 90 N 45 N

107. 90 N 45 N FO FI

108. 90 N 45 N FO FI 45N 90N

109. 90 N 45 N FO FI 45N 90N = 2 MA

110. • Law Conservation of Energy

111. • Law Conservation of Energy – Energy cannot be created or destroyed.

112. • Law Conservation of Energy – Energy cannot be created or destroyed. – Energy can be transferred.

115. • Video Links! Mechanical Advantage, Khan Academy, Optional (Advanced) (I,II,III) – http://www.khanacademy.org/science/physics/m echanics/v/introduction-to-mechanical-advantage (Part 1) – http://www.khanacademy.org/science/physics/m echanics/v/mechanical-advantage--part-2 (2) – http://www.khanacademy.org/science/physics/m echanics/v/mechanical-advantage--part-3 (3)

126. • Simple Machines Available Sheet: Pulleys

133.  A pulley makes work seem easier  Changes the direction of motion to work with gravity. Instead of lifting up, you can pull down.  Uses your body weight against the resistance. Copyright © 2010 Ryan P. Murphy

144. • MA = The number of ropes that support the pulley. The end of the rope doesn’t count. MA =2 – What is the MA of this pulley system below? Copyright © 2010 Ryan P. Murphy FO FI FI FO 100 kg 50 kg = 2 MA

153. • What is the MA?

162. • Pulley Simulator: (Optional) – http://www.compassproject.net/sims/pulley.html

174. Pulleys

177. • The chain on your bicycle is a pulley.

191. • * Bonus: Name this family that used simple machines to create a tree house?

259. Top Pulley Bottom Pulley

264. • Simple Machines Available Sheet.

265. Please create this spreadsheet in your journal. Weight (g) newtons No Pulley ____ grams Fixed Pulley ____ grams Combined Pulley 2 ____ grams Combined Pulley 4 ____ grams Copyright © 2010 Ryan P. Murphy

266. • Please use the materials to do the following. –Measure the newtons required with a Spring Scale to lift the ____ grams of weight with the different pulleys described in the spreadsheet. Copyright © 2010 Ryan P. Murphy

267. • Please use the materials to do the following. –Measure the newtons required with a Spring Scale to lift the ____ grams of weight with the different pulleys described in the spreadsheet. Copyright © 2010 Ryan P. Murphy Remember to zero your spring scale!

268. • Please use the materials to do the following. – Record the newtons required with a Spring Scale to lift the ____ grams of weight with a fixed pulley.

269. • Fixed Pulley System Construction

277. • Two Pulley System Construction

285. • Please use the materials to do the following. – Record newtons with a combined pulley (4) to lift the ____ grams of weight?

286. • 4 Pulley System Construction

288. • 4 Pulley System Construction Two wheels / Pulley

289. • 4 Pulley System Construction Two wheels / Pulley

294. • Questions? – What was the advantage in newtons to use a fixed pulley rather than no pulley at all? – What was the advantage in Newtons to use a combined pulley over a fixed pulley? – What was the advantage in Newtons to use a combined pulley (4) over a combined pulley (2)? – Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

295. • Questions? – What was the advantage in newtons to use a fixed pulley rather than no pulley at all? – What was the advantage in newtons to use a combined pulley over a fixed pulley? – What was the advantage in Newtons to use a combined pulley (4) over a combined pulley (2)? – Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

296. • Questions? – What was the advantage in newtons to use a fixed pulley rather than no pulley at all? – What was the advantage in newtons to use a combined pulley over a fixed pulley? – What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? – Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

297. • Questions? – What was the advantage in newtons to use a fixed pulley rather than no pulley at all? – What was the advantage in newtons to use a combined pulley over a fixed pulley? – What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? – Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

300. • Questions? – What was the advantage in newtons to use a fixed pulley rather than no pulley at all? – There was no Mechanical Advantage (MA) when using the fixed pulley. It was easier because you didn’t have to bend down. Copyright © 2010 Ryan P. Murphy

303. • Questions? – What was the advantage in newtons to use a combined pulley over a fixed pulley? – The combined pulley required less force (2 newtons) to lift the load. The Mechanical Advantage was 2 newtons. Copyright © 2010 Ryan P. Murphy

306. • Questions? – What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? – The (MA) was 4. It only took 1 newton to lift the load compared 3 newtons with the combined 2 pulley, and 5 newtons with no pulley at all. Copyright © 2010 Ryan P. Murphy

307. Pulleys. Learn more at… http://www.swe.org/iac/lp/pulley_03.html

309. • Questions? – Did a moveable pulley allow you to move the load with minimal effort? – The pulley moved along the rope very easily. We were able to move the load easily once it was lifted. The pulley rolled down the rope because of it’s potential energy. • Not very good for lifting. Copyright © 2010 Ryan P. Murphy

312. • Simple Machines Available Sheet: Levers

313.  Lever -

314.  Lever A stiff bar that rests on a support called a fulcrum which lifts or moves loads.

340. • Video Link! Levers and skateboarding. – http://www.youtube.com/watch?v=72ZNEactb-k

346. • Which is a first, second, and third class lever.? – Please put your finger in the air when the square lights up.

375. • The law of equilibrium is: The effort multiplied by its distance from the fulcrum equals the load multiplied by its distance from the fulcrum.

376. • The law of equilibrium is: The effort multiplied by its distance from the fulcrum equals the load multiplied by its distance from the fulcrum. – True or False? – 2 lbs of effort exerted 4 feet from the fulcrum will lift 8 lbs located 1 foot on the other side of fulcrum.

379. • Activity! Sending a stuffed toy flying. – Create a first class lever and send and toy into the air by jumping on the effort arm.

384. • Activity! Sending a stuffed toy flying. – Change the fulcrum, Will this change how high the toy will travel.

397. • Activity! Levers – Please record the spreadsheet below in your journal. Mechanical Advantage # of newtons to lift lever Just the weight (_____grams) No MA E arm = 25cm R arm = 5cm E arm = 20cm R arm = 10cm E arm = 15cm R arm = 15cm E arm = 10cm R arm = 20cm E arm = 5cm R arm = 25cm Copyright © 2010 Ryan P. Murphy

399. • Simulated data / Answers Mechanical Advantage # of newtons to lift lever Just the weight (_____ grams) No MA 3 Results will vary due to spring scales E arm = 25cm R arm = 5cm 25/5 = 5 .5 E arm = 20cm R arm = 10cm 20/10 = 2 1 E arm = 15cm R arm = 15cm 15/15 = 1 2 E arm = 10cm R arm = 20cm 10/20 = .5 4 E arm = 5cm R arm = 25cm 5/25 = .2 8 Copyright © 2010 Ryan P. Murphy

400. Mechanical Advantage # of newtons to lift lever Just the weight (_____ grams) No MA 3 Results will vary due to spring scales E arm = 25cm R arm = 5cm 25/5 = 5 .5 E arm = 20cm R arm = 10cm 20/10 = 2 1 E arm = 15cm R arm = 15cm 15/15 = 1 2 E arm = 10cm R arm = 20cm 10/20 = .5 4 E arm = 5cm R arm = 25cm 5/25 = .2 8 Copyright © 2010 Ryan P. Murphy

401. Mechanical Advantage # of newtons to lift lever Just the weight (_____ grams) No MA 3 Results will vary due to spring scales E arm = 25cm R arm = 5cm 25/5 = 5 .5 E arm = 20cm R arm = 10cm 20/10 = 2 1 E arm = 15cm R arm = 15cm 15/15 = 1 2 E arm = 10cm R arm = 20cm 10/20 = .5 4 E arm = 5cm R arm = 25cm 5/25 = .2 8 Copyright © 2010 Ryan P. Murphy Note Mechanical Disadvantage

403. • Questions / Follow-up (Use data in MA or in newtons) – Which fulcrum position (Crayola marker) gave you the best MA or lowest number of Newtons? – Which fulcrum position (marker) gave you the least MA or negative MA or highest number of Newtons? – How does changing the fulcrums location effect the lever? Copyright © 2010 Ryan P. Murphy

404. • Questions / Follow-up (Use data in MA or in newtons) – Which fulcrum position (Crayola marker) gave you the best MA or lowest number of newtons? – Which fulcrum position (marker) gave you the least MA or negative MA or highest number of newtons? – How does changing the fulcrums location effect the lever? Copyright © 2010 Ryan P. Murphy

408. • Questions / Follow-up (Use data in MA or in newtons) – Which fulcrum position (Crayola marker) gave you the best MA or lowest number of newtons? – Answer: The lever had the highest Mechanical Advantage when it had a long effort arm, and short resistance arm (E=25, R=5) Copyright © 2010 Ryan P. Murphy

412. • Questions / Follow-up (Use data in MA or in newtons) – Which fulcrum position (marker) gave you the least MA or negative MA or highest number of newtons? – Answer: It was most difficult (Least MA) to lift the weight with a short effort arm, and long resistance arm (E=5, R=25) Copyright © 2010 Ryan P. Murphy

416. • Questions / Follow-up (Use data in MA or in newtons) – How does changing the fulcrums location effect the lever? – Answer: Changing the fulcrum can increase or decrease the effort needed to lift the weight. Copyright © 2010 Ryan P. Murphy

417. • Questions / Follow-up (Use data in MA or in newtons) – How does changing the fulcrums location effect the lever? – Answer: Changing the fulcrum can increase or decrease the effort needed to lift the weight. The closer the fulcrum was to the weight the easier it was to lift. Copyright © 2010 Ryan P. Murphy

418. • Questions / Follow-up (Use data in MA or in newtons) – How does changing the fulcrums location effect the lever? – Answer: Changing the fulcrum can increase or decrease the effort needed to lift the weight. The further away the fulcrum, from the weight, the harder it was to lift. Copyright © 2010 Ryan P. Murphy

448. • Please use your materials from the first class lever to construct a second class lever. – Feel the difference when you adjust the load.

457. • Activity! Second Class Lever. – Set-up your own spreadsheet and conduct your own investigation (collecting data) about second class levers.

458. • Activity! Second Class Lever. – Set-up your own spreadsheet and conduct your own investigation (collecting data) about second class levers. Be prepared to report your findings to the class.

459. • Activity! Second Class Lever. – Use the computers to set-up your spreadsheet and graph. Be prepared to report your findings to the class.

460. • Activity! Second Class Lever. – Answers (General): The (MA) increases as the load is moved closer to the fulcrum / resistance arm decreases and effort arm increases. Be prepared to report your findings to the class.

465. Fulcrum

466. Load Fulcrum

467. Load Fulcrum Effort

494. • How many levers can you point out?

495. • How many levers can you point out?

496. • How many levers can you point out? Levers: Learn more at… http://www.technologys tudent.com/forcmom/le ver1.htm

497. • Video! (Optional) – 6 minutes. – Cirque du Soleil and the Lever. – What type of lever is being used? – How is the lever used to perform this act. – http://www.youtube.com/watch?v=l9OYEpC3GWI

501.  The mechanical advantage of a wedge can be found by dividing the length of the slope (S) by the thickness (T) of the big end.  What is the MA of the wedge below. Copyright © 2010 Ryan P. Murphy

502.  The mechanical advantage of a wedge can be found by dividing the length of the slope (S) by the thickness (T) of the big end.  What is the MA of the wedge below? 50 cm 10 cm Copyright © 2010 Ryan P. Murphy

504. • What is the MA of this wedge? 20 cm 5 cm

505. • What is the MA of this wedge? 20 cm 5 cm 20/5 =

506. • What is the MA of this wedge? 20 cm 5 cm 20/5 = MA 4

515. • Activity! (Optional) Mechanical Advantage of a Wedge. – Please trace the wooden blocks and calculate the Mechanical Advantage of each type of wedge.

516. • Activity! (Optional) Mechanical Advantage of a Wedge. – Please trace the wooden blocks and calculate the Mechanical Advantage of each type of wedge. T S Measure the longest slope on this type of wedge/

517. • Activity! – On the next slide, your table group must find the MA of 4 different wedges in 60 seconds. – To succeed your group must be organized, precise, and methodical.

518. Simulated wooden blocks. 3 8 4 20 10 4 6 12

519. Simulated wooden blocks. 3 8 4 20 10 4 6 12

520. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2

521. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2

522. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2 MA = 6.66

523. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2 MA = 6.66

524. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2 MA = 6.66 MA = 2.5

525. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2 MA = 6.66 MA = 2.5

526. Simulated wooden blocks. 3 8 4 20 10 4 6 12 MA=2 MA = 6.66 MA = 2.5 MA = 2

527. • What is our next simple machine?

528. • What is our next simple machine?

530. Axle Wheel

533.  Wheel and Axle: A wheel with a rod, called an axle, through its center lifts or moves a load. Copyright © 2010 Ryan P. Murphy The larger circles are the wheels. The smaller circles are the axles.

547.  Radius: A straight line from a circles center to its perimeter.

548. • Diameter: The length of a straight line passing through the center of a circle and connecting two points on the circumference.

549. • Diameter: The length of a straight line passing through the center of a circle and connecting two points on the circumference. Diameter

550. • Diameter: The length of a straight line passing through the center of a circle and connecting two points on the circumference. Diameter

553. 1.25 m .5 m “The MA is not 2.5, it’s 5.5”

554. 1.25 m .5 m “Dude, She’s right, the MA is 2.5”

555. 1.25 m .5 m “Yah, but… Arggh”

556. • Note how this mousetrap car is using a wheel that would have a high mechanical advantage. 15 cm .5 cm

557. • Note how this mousetrap car is using a wheel that would have a high mechanical advantage. 15 cm .5 cm 15/.5 =

558. • Note how this mousetrap car is using a wheel that would have a high mechanical advantage. 15 cm .5 cm 15/.5 = MA 30

559. Wheel and Axle, Mechanical Advantage. Learn more at… http://en.wikipedia.org/wiki/Wheel_and_axle

561. • Activity! Trace an old compact disc into your science journal and pretend it is a wheel and axle. (Crayola Marker is Axle) – Find the Mechanical Advantage of this wheel and axle.

564. • Activity! Trace an old compact disc into your science journal and pretend it is a wheel and axle. (Crayola Marker is Axle) – Find the Mechanical Advantage of this wheel and axle. Wheel radius = 5.2 cm

565. • Activity! Trace an old compact disc into your science journal and pretend it is a wheel and axle. (Crayola Marker is Axle) – Find the Mechanical Advantage of this wheel and axle. Wheel radius = 5.2 cm

566. • Activity! Trace an old compact disc into your science journal and pretend it is a wheel and axle. (Crayola Marker is Axle) – Find the Mechanical Advantage of this wheel and axle. Wheel radius = 5.2 cm Axle radius = .75 cm

567. • Activity! Trace an old compact disc into your science journal and pretend it is a wheel and axle. (Crayola Marker is Axle) – Find the Mechanical Advantage of this wheel and axle. 5.2 / .75 = MA Wheel radius = 5.2 cm Axle radius = .75 cm

568. • Activity! Trace an old compact disc into your science journal and pretend it is a wheel and axle. (Crayola Marker is Axle) – Find the Mechanical Advantage of this wheel and axle. 5.2 / .75 = MA 6.93 (We can call 7) Wheel radius = 5.2 cm Axle radius = .75 cm

569. • Simple Machines Available Sheet: – Wheel and Axle.

570. • Wheel and Axle. – Find the numbers of newtons to drag your journal across the table with some weights on it. – Next, place Crayola Markers under the journal with the weights on top and use the Spring Scale to find the # of newtons. – What was the difference in newtons?

578. • Activity! Finding the Mechanical Advantage (MA) of the Handicap ramp (Inclined Plane) at the school.

579. • Law Conservation of energy: energy cannot be created or destroyed.

608. • Inclined plane is a wedge

611. • Activity Simulator: Inclined Plane • http://phet.colorado.edu/en/simulation/the- ramp

612. • Simple Machines Available Sheet: – Inclined Plane

613. • Set-up of activity. – The number of textbook will change. The independent variable. – The dependent variable is the # of newtons. – The control is the same weight, surface, spring scale, etc between the trials. Learn more at.. http://illuminations.nctm.org/LessonDetail.aspx?id=L278

614. • Activity! How does an inclined plane make work easier. – Use the spring scale and with attached weight to determine the difference in newtons to overcome friction in the following. – Find MA by measuring height and the slope. • Divide the length of the slope by the height. • Flat ramp (no textbooks) newtons ______ • Low ramp (3 textbooks) newtons ______ • Medium ramp (6 textbooks) newtons _____ • Steep ramp (9 books) newtons ______ • Weight hanging with no ramp newtons ______ Copyright © 2010 Ryan P. Murphy

615. Flat ramp (no textbooks) newtons ___.5___ Low ramp (3 textbooks) newtons ___1.0___ Medium ramp (6 textbooks) newtons ___1.5___ Steep ramp (9 textbooks) newtons ___2.0___ Weight with no ramp newtons ___2.5___ Copyright © 2010 Ryan P. Murphy

616. • Questions / Follow up to Inclined Plane. – Using data (Netwons) in your response, How did the various inclined planes effect the amount of work needed to get your journal up the ramp. – Use a meter stick to find the Mechanical Advantage of the inclined plane with 3 textbooks vs. 9 textbooks. You need to measure the height and the length of the ramp. Copyright © 2010 Ryan P. Murphy

617. • Questions / Follow up to Inclined Plane. – Using data (newtons) in your response, How did the various inclined planes effect the amount of work needed to get your weight up the ramp? – Use a meter stick to find the Mechanical Advantage of the inclined plane with 3 textbooks vs. 9 textbooks. You need to measure the height and the length of the ramp. Copyright © 2010 Ryan P. Murphy

618. • Questions / Follow up to Inclined Plane. – Using data (newtons) in your response, How did the various inclined planes effect the amount of work needed to get your weight up the ramp? – Use a meter stick to find the Mechanical Advantage of the inclined plane with 3 textbooks vs. 9 textbooks. You need to measure the height and the length of the ramp. Copyright © 2010 Ryan P. Murphy

619. • Determining the MA for an inclined is very important when building roadways. – Too steep and some cars and trucks may not make it. – Too shallow, and it just takes to long. Copyright © 2010 Ryan P. Murphy

624. • Video Link! (Optional) Alpe d’huez (Inclined Plane) Tour De France – http://www.youtube.com/watch?v=F94TCxLY Zew

632.  The circumference of a circle is the distance around the circle. It is the circle's perimeter. The formula for circumference is:  Circumference = times Diameter  C = π d  Where π = 3.14 Copyright © 2010 Ryan P. Murphy

639. • Simple Machines Available Sheet: Screw

655. • Archimedes Screw: A screw contained in a cylinder that when turned can easily raise water.

658. • Pascal's Law: If you apply pressure to fluids that are confined (or can’t flow anywhere), the fluids will then transmit (or send out) that same pressure in all directions at the same rate. Copyright © 2010 Ryan P. Murphy

659. • Pascal's Law: If you apply pressure to fluids that are confined (or can’t flow anywhere), the fluids will then transmit (or send out) that same pressure in all directions at the same rate. Copyright © 2010 Ryan P. Murphy Cool Picture of a Gnome being squeezed and yelling something about Pascal in a different language.

660. • Pascal's Law: If you apply pressure to fluids that are confined (or can’t flow anywhere), the fluids will then transmit (or send out) that same pressure in all directions at the same rate. Copyright © 2010 Ryan P. Murphy

663. • Hydraulics - The branch of applied science that deals with fluids in motion.

664. • Hydraulics - The branch of applied science that deals with fluids in motion.

665. • Hydraulic system: Force applied at one end is transmitted to the other using a incompressible fluid.

666. • Hydraulic system: Force applied at one end is transmitted to the other using a incompressible fluid. – The fluid is almost always an oil. The force is almost always multiplied in the process.

667. How Hydraulics Work. Learn more at… http://science.howstuffworks.com/transport/engines- equipment/hydraulic.htm

668. • Activity – Pascal’s Law and Hydraulics.

672. • Activity! Making a hydraulic syringe drive. – Push syringe to bottom of tube on one side. – Dip end of syringe in water and pull to fill tube. – Attach hose to one side. Copyright © 2010 Ryan P. Murphy

673. • Activity! Making a hydraulic syringe drive. – Push syringe to bottom of tube on one side. – Dip end of syringe in water and pull to fill tube. – Attach hose to one side. – Depress syringe until water comes out of tube. Copyright © 2010 Ryan P. Murphy

674. • Activity! Making a hydraulic syringe drive. – Push syringe to bottom of tube on one side. – Dip end of syringe in water and pull to fill tube. – Attach hose to one side. – Depress syringe until water comes out of tube. – Attach other syringe that is depressed fully. Copyright © 2010 Ryan P. Murphy

675. • Activity! Making a hydraulic syringe drive. – Push syringe to bottom of tube on one side. – Dip end of syringe in water and pull to fill tube. – Attach hose to one side. – Depress syringe until water comes out of tube. – Attach other syringe that is depressed fully. – Push one side down at a time. Copyright © 2010 Ryan P. Murphy

676. • Questions to making a hydraulic syringe drive. – Draw / Sketch the hydraulic drive you created. – How is Pascal’s Law related to the hydraulic drive you just built? – Would it work better with oil, or with creamy peanut butter? Explain your answer using viscosity. Copyright © 2010 Ryan P. Murphy

678. • Questions to making a hydraulic syringe drive. – Draw / Sketch the hydraulic drive you created. – How is Pascal’s Law related to the hydraulic drive you just built? – Would it work better with oil, or with creamy peanut butter? Explain your answer using viscosity. Copyright © 2010 Ryan P. Murphy Viscosity: Resistance of liquid to flow.

679. • Questions to making a hydraulic syringe drive. – Draw / Sketch the hydraulic drive you created. – How is Pascal’s Law related to the hydraulic drive you just built? – Would it work better with oil, or with creamy peanut butter? Explain your answer using viscosity. Copyright © 2010 Ryan P. Murphy Viscosity: Resistance of liquid to flow. -High Viscosity = Difficult to flow.

680. • Questions to making a hydraulic syringe drive. – Draw / Sketch the hydraulic drive you created. – How is Pascal’s Law related to the hydraulic drive you just built? – Would it work better with oil, or with creamy peanut butter? Explain your answer using viscosity. Copyright © 2010 Ryan P. Murphy Viscosity: Resistance of liquid to flow. -High Viscosity = Difficult to flow. -Low Viscosity = Easy to flow.

685. • Questions to making a hydraulic syringe drive. – How is Pascal’s Law related to the hydraulic drive you just built? – Answer: When the syringe is depressed, the fluid is sent out (transmitted) equally in all directions and flows through the tube to the syringe on the other side. Copyright © 2010 Ryan P. Murphy

686. • Questions to making a hydraulic syringe drive. – Would it work better with oil, or with creamy peanut butter? Explain your answer using viscosity. – It would work better with oil because it has a lower viscosity (resistance to flow) Copyright © 2010 Ryan P. Murphy

687. • Activity! Roving simple machine finding. – Go stand by a simple machine. – I will go around the room and point to you, say the simple machine and point. – Scope out a new machine and when everyone is done you have a few seconds to find a new one that hasn’t been used. – Last person standing with a simple machine to point out wins. Copyright © 2010 Ryan P. Murphy

692. • Activity! Going to the gym with our journals to investigate a compound machine in action. – What simple machines are used? – How do they work together to make work easier? Copyright © 2010 Ryan P. Murphy

693. • Name the Simple Machine Wheel and axle

694. • Quiz Wiz! 1-10 Name the Simple Machine Wheel and axle

704. • Review – Name a few machines seen in this animation.

713. • Quiz Wiz 1-10 Name the simple machine.

724. • Bonus – What simple machine do I represent.

725. • Answers to the Quiz

746. • Bonus – What simple machine do I represent.

747. • Simple Machine – Wheel and Axle for Axl Rose.

751. Simple Machines: Learn more at.. http://www.cosi.org/downloads/activities/ simplemachines/sm1.html

752. • What two simple machines make this pizza cutter and compound machine?

753. • Wheel and axle and the wedge.

756. • What simple machines make this can opener a compound machine?

757. • Wheel and Axle,

758. • Wheel and Axle, Lever,

759. • Wheel and Axle, Lever, Wedge

760. • Activity! Using a Dolly to move a person down the hall. – What two simple machines are being used?

761. • Answer: Wheel and Axle / Lever

762. • Answer: Wheel and Axle / Lever – What class lever would it be?

763. • Answer: Wheel and Axle / Lever – What class lever would it be? Load Fulcrum Effort

764. • Answer: Wheel and Axle / Lever – What class lever would it be? – Answer: Third Class Lever Load Fulcrum Effort

765. • Video Link! OK GO Rube Goldberg Machine – http://www.youtube.com/watch?v=qybUFnY7Y8 w HD – Teacher Tube: http://www.teachertube.com/viewVideo.php?vide o_id=196729

766. • Additional Rube Goldberg Machines from Japan. – http://www.youtube.com/watch?v=VI47chBIgOU

767. • Activity! Crazy Machine (Optional) – Your table group must use a ball bearing (Start) to pop a balloon (Finish) using an example of every simple machine. – I will provide some materials, but you will also need to bring in some useful materials. • Build part of it at home. – Your crazy machine must be confined to a lab table. – One period to plan, one period to build and implement. Copyright © 2010 Ryan P. Murphy

773. • Table groups need to create a blue-print in journal. • Class materials include the following. – Balloon – Pulleys and string, rulers / levers – Ball Bearing – Long inclined plane – Hot-wheels cars – Hot-wheels track – Elastics (to be used in class only) – And much more from the junk box. Copyright © 2010 Ryan P. Murphy

806. • Good grade = Goes far • Poor grade = Doesn’t go far • Cool and colorful but doesn’t go far = Poor grade!

807. • Mouster Truck Presentations. – Students should place mousetrap car by their poster board. – Teacher will count you off, 1, 2, 1, 2, etc – 1’s will present their poster board to the 2’s and teacher.. Please try and visit as many as you can. – 2’s will then present to the 1’s and teacher. Please visit as many as you can. – Get your car ready as the trials will start soon. – Any Predictions. Scoring chart on next page…

808. Grade A+ A A- B+ B B- C D X Distance Meters 10+ 5+ 4.5 4.0 3.5 3.0 2.0 1.0 0 Possible Grading: Based solely on distance.

810. • You can now add text to the white space and neatly color the pictures to these parts.

811. Discuss the bungee jumping egg experience

821. • Activity! Answer with your feet.

822. A B Teacher needs to label the corners of the room. C D

823. A B Please walk safely and take some wrong turns before traveling to the corner with the correct answer. C D

825. A B All energy is… A.) Kinetic or Potential. B.) At a state of rest. C.) Subjected to gravity. D.) Work = Mass x Distance C D

826. A B All energy is… A.) Kinetic or Potential. B.) At a state of rest. C.) Subjected to gravity. D.) Work = Mass x Distance C D

827. A B Kinetic Energy is the energy an object has because of it’s… A.) Mass and Motion. B.) Time and Space. C.) Friction Level D.) Affects on gravity. C D

828. A B Kinetic Energy is the energy an object has because of it’s… A.) Mass and Motion. B.) Time and Space. C.) Friction Level D.) Affects on gravity. C D

829. A B This is a stiff bar that rests on a support called a fulcrum which lifts or moves loads. A.) Wedge B.) Inclined plane C.) Lever D.) Screw C D

830. A B This is a stiff bar that rests on a support called a fulcrum which lifts or moves loads. A.) Wedge B.) Inclined plane C.) Lever D.) Screw C D

831. A B This is the straight line from a circles center to its perimeter. A.) Diameter B.) Distance C.) Radius D.) Mechanical Advantage C D

832. A B This is the straight line from a circles center to its perimeter. A.) Diameter B.) Distance C.) Radius D.) Mechanical Advantage C D

833. A B This is the name for an object with at least one slanting side ending in a sharp edge, which cuts material apart. A.) Pulley B.) Wedge C.) Second Class Lever D.) Third Class Lever C D

834. A B This is the name for an object with at least one slanting side ending in a sharp edge, which cuts material apart. A.) Pulley B.) Wedge C.) Second Class Lever D.) Third Class Lever C D

835. A B This is the name for a slanting surface connecting a lower level to a higher level. A.) Block and Tackle B.) Wedge C.) Inclined Plane D.) First Class Lever C D

836. A B This is the name for a slanting surface connecting a lower level to a higher level. A.) Block and Tackle B.) Wedge C.) Inclined Plane D.) First Class Lever C D

837. A B • Machines do all of the following except… A.) Transfer force from one place to another. B.) Change direction of a force. C.) Does not require energy to create a force. D.) Increase the distance or speed of a force. C D

838. A B • Machines do all of the following except… A.) Transfer force from one place to another. B.) Change direction of a force. C.) Does not require energy to create a force. D.) Increase the distance or speed of a force. C D

839. A B What is the MA of this inclined plane? A.) 2 B.) 4 C.) 8 D.) 32

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