Weather Assessment Review

Force and Motion Assessment JeopardyWhat is a device that makes work easier by changing the size or direction of force?PowerWattMachineForceWhat is a device that makes work easier by changing the size or direction of force?PowerWattMachineForceWhat is the work done by a machine on an object?PowerWork InputWork OutputLeverWhat is the work done by a machine on an object?PowerWork InputWork OutputLeverWhat is work that you do on a machine?PowerWork inputWork outputLeverWhat is work that you do on a machine?PowerWork inputWork outputLeverWhat is the number of times the machine multiples force?Power Output forceMechanical efficiencyMechanical advantage

What is the number of times the machine multiples force?Power Output forceMechanical efficiencyMechanical advantage

Which of the following is the comparison of a machines work output with the work input?Mechanical efficiencyForceMechanical advantagePowerWhich of the following is the comparison of a machines work output with the work input?Mechanical efficiencyForceMechanical advantagePowerWhich of the following causes machines not to be 100% efficient?Friction Input forceOutput forcePowerWhich of the following causes machines not to be 100% efficient?Friction Input forceOutput forcePowerIn which situation is a person doing work on an object?A school crossing guard raises a stop sign that weighs 10 N.A student walks while wearing a backpack that weighs 15 N.A man exerts 350 N force on a rope attached to a house.A worker holds a box 1 m off the floor.In which situation is a person doing work on an object?A school crossing guard raises a stop sign that weighs 10 N.A student walks while wearing a backpack that weighs 15 N.A man exerts 350 N force on a rope attached to a house.A worker holds a box 1 m off the floor.If a barbell weighs 160 N, what other information do you need to calculate how much work it takes to lift it?The shape of the weightsHow high the barbell is being liftedThe strength of the person doing the liftingThe amount of output forceIf a barbell weighs 160 N, what other information do you need to calculate how much work it takes to lift it?The shape of the weightsHow high the barbell is being liftedThe strength of the person doing the liftingThe amount of output forceHow does a ramp make lifting a heavy object easier?The object is moved over a shorter distance.The ramp increases the amount of work you do.Less force is needed to move the object over a longer distance.More force is needed to move the object over a longer distance.How does a ramp make lifting a heavy object easier?The object is moved over a shorter distance.The ramp increases the amount of work you do.Less force is needed to move the object over a longer distance.More force is needed to move the object over a longer distance.If an identical stack of books is lifted the same distance and one person does the job twice as fast, which of the following is done twice as much?Work inputWork outputPowerEfficiencyIf an identical stack of books is lifted the same distance and one person does the job twice as fast, which of the following is done twice as much?Work inputWork outputPowerEfficiencyBy comparing the mechanical advantage of two machines, what can you tell about the machine?Which is biggerWhich has a larger input forceWhich has a larger output forceWhich makes work easierBy comparing the mechanical advantage of two machines, what can you tell about the machine?Which is biggerWhich has a larger input forceWhich has a larger output forceWhich makes work easierIf the work output of a machine is always less than the work input, where does the missing work go?It is used to get the machine started.It is used to overcome the friction created by the machineIt is used to keep the machine runningThere isnt enough power presentIf the work output of a machine is always less than the work input, where does the missing work go?It is used to get the machine started.It is used to overcome the friction created by the machineIt is used to keep the machine runningThere isnt enough power presentWhich of the following is NOT a wedge?KnifePlowChiselRamp Which of the following is NOT a wedge?KnifePlowChiselRamp Where is the input force of a wheel and axel exerted?A circular distanceA rectangular distanceAn inclined planeA spiralWhere is the input force of a wheel and axel exerted?A circular distanceA rectangular distanceAn inclined planeA spiralGreg applies a force of 100 N to move a box 5 meters. How much work did he do?100 J500 J5 J500 NGreg applies a force of 100 N to move a box 5 meters. How much work did he do?100 J500 J5 J500 NWhich of the following is a compound machine?First-class leverBlock and tackle pulleyWheel and axelScrew Which of the following is a compound machine?First-class leverBlock and tackle pulleyWheel and axelScrew What does a fixed pulley change?The speed of a forceThe direction of a forceThe size of a forceThe timing of a forceWhat does a fixed pulley change?The speed of a forceThe direction of a forceThe size of a forceThe timing of a forceWhen a machine increases the size of the force exerted, what happens to the distance?It must increaseIt must decreaseIt must stay the sameIt must doubleWhen a machine increases the size of the force exerted, what happens to the distance?It must increaseIt must decreaseIt must stay the sameIt must doubleWhat type of simple machine is a screw?Inclined planeWheel and axleLeverPulley

What type of simple machine is a screw?Inclined planeWheel and axleLeverPulley

What is the rate at which power is transferred?PowerEnergyWorkJouleWhat is the rate at which power is transferred?PowerEnergyWorkJouleWhat is a machine that is made of two simple machines?Simple machineLeverPulleyCompound machineWhat is a machine that is made of two simple machines?Simple machineLeverPulleyCompound machineWhat is a machine with a grooved wheel that holds a cable?LeverPulleyWheel and axleWedge

What is a machine with a grooved wheel that holds a cable?LeverPulleyWheel and axleWedge

A moving object has what kind of energy?ForcedWorkMovingKineticA moving object has what kind of energy?ForcedWorkMovingKineticChris and Jane are lifting boxes to put them on shelves. Chris does 200 J of work in 5 minutes and Jane does 200 J of work in 4 minutes. What is the difference between the two jobs?The input forceThe output forceThe workThe powerChris and Jane are lifting boxes to put them on shelves. Chris does 200 J of work in 5 minutes and Jane does 200 J of work in 4 minutes. What is the difference between the two jobs?The input forceThe output forceThe workThe powerA doorknob is an example of aPulleyWheel and axleLeverScrew A doorknob is an example of aPulleyWheel and axleLeverScrew The mechanical advantage of a _____ can be found by dividing the radius of the wheel with the radius of the axle.Wheel and axlePulleyLeverInclined planeThe mechanical advantage of a _____ can be found by dividing the radius of the wheel with the radius of the axle.Wheel and axlePulleyLeverInclined planeThe greater the ratio of an inclined planes length to its height the greater the Mechanical efficiencyMechanical advantageWorkPower The greater the ratio of an inclined planes length to its height the greater the Mechanical efficiencyMechanical advantageWorkPower