Energy - Middle School
Quiz by Mrs. Clarici
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- Q 1/38Score 0A result of a force moving an object a certain distance., Force x Distance29work
38 questions
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- Q1A result of a force moving an object a certain distance., Force x Distancework30s
- Q2power =work / timepower30s
- Q3A unit of the SI system used to express the amount of work or energy; J = N x m.joule30s
- Q4A measure of power equal to one joule of work per second. W = J / swatt30s
- Q5A device that makes work easiermachine30s
- Q6The force exerted on a machineinput force30s
- Q7the force that is exerted by a machineoutput force30s
- Q81. changing force ormachines can make work easier by30s
- Q9See image2. changing distance or30s
- Q10See image3. changing direction30s
- Q11Ratio of the output force exerted by a machine to the input force applied to the machine.mechanical advantage30s
- Q12A measure of how much of the work put into a machine is changed into useful output work by the machine. Expressed as percent.efficiency30s
- Q13A machine that takes into account friction. less than 100%real machine30s
- Q14A machine in which work input equals work output. No friction involved. 100% efficientideal machine30s
- Q15Any of various elementary mechanisms including the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. WWSLIPsimple machine30s
