This is a quiz for basic principles of machines and forces.
Distance
Contact
Force
Lever
Element
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A complex machine.
A musical instrument.
An instrument or device that allows us to do tasks with a lot of effort.
An instrument or device that allows us to do tasks with less effort.
An instrument or device that allows us to do tasks with no effort.
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First-class lever
Second-class lever
Third-class lever
None of the above
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Lever
Pulley
Inclined plane
Screw
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Simple machine.
Compound machine
Element of a machine
Itone
Music machine
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Simple machine.
Compound machine.
Element of a machine.
Wheel.
Music machine.
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Simple machine.
Compound machine.
Element of a machine.
Axle.
Music machine.
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Forward -- forward
Backward -- backward
Forward -- backward
Backward -- forward
Good -- nice
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