Simple Machines & Work
Quiz by Chrissie Smith
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15 questions
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- Q1Property that enables something to do workenergyeffort forceworkforce30s
- Q2Happens when a force is used to move an objectworkforcemovementenergy30s
- Q3Device that reduces the effort force needed to do workwedgesimple machinescrewwheel and axle30s
- Q4The force that moves an object over a distancepushmovementpulleffort force30s
- Q5A board or bar that moves around a fulcrumleverfulcruminclined plabewedge30s
- Q6Pulley that moves along the ropemovable pulleyfixed pulledcombined pulleymixed pulley30s
- Q7A grooved wheel with a rope running along the groovesimple machinepulleyleverinclined plane30s
- Q8Ben sits on one end of a see-saw and Jack sits on the other. Ben goes up in the air and Jack stays down on the ground. In order for Jack to make Ben move down, he should _____.stand on the boardpush down on the boardmove towards the centermove away from the center30s
- Q9When a toy car is at rest and then pushed, what is being done to the toy car?workFulcrumreduces the amount of forcenewtons30s
- Q10The presence of a grooved wheel and how well the wheel spins, can change the efficiency of the ____.pulleyinclined planescrewwheel and axle30s
- Q11Ms. Sullivan's class is investigating simple machines. They built a ramp to roll tennis balls down, and measured how far they rolled. The tennis balls released at the top of the ramp all traveled about the same distance. If they wanted the balls to roll even further, what could they do?Build a ramp that is shorter.Build a ramp that is taller.Use tournament grade tennis balls.Try the experiment in a different hallway.30s
- Q12What measures how well a machine converts input energy, work, and power into output energy, work, and power?frictionmechanical efficiencyNewtonsmechanical conversion30s
- Q13Lifting a bale of cotton is no easy task. Farmer Jones wanted to store the cotton in the loft of his barn but he could not budge the bale. He consulted the high school's science teacher for help. She suggested a simple machine. Farmer Jones' options included an inclined plane, a fixed pulley, a block and tackle, and a lever. If he had to lift the bale of cotton to a height of fifteen feet, which would be the MOST practical solution?Leverinclined planeblock and tacklefixed pulley30s
- Q14A portion of a human arm works as a simple machine. Which simple machine is most like a human arm?a leveran inclined planea screwa wedge30s
- Q15How can you change a ramp so that less effort force needed to move an object to the top ?increase the height of the rampdecrease the length of the rampit cannot be doneincrease the length of the ramp30s