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Simple Machines SS

Studystack for Simple Machines Quiz

QuestionAnswer
A grooved wheel with a rope, chain, or cable running along the groove. Pulley
An inclined plane with one or two sloping sides. Wedge
A bar that is free to pivot or turn around a fixed point. Lever
A shaft or axle attached to the center of a larger wheel, so that the wheel and axle rotate together. Wheel and Axle
A sloping surface, such as a ramp that reduces the amount of force required. Inclined Plane
A cylindrical shape with an inclined plane wrapped around it. Screw
Give an example of a compound machine. Scissors, bicycle, etc.
What class of lever is a broom? Third Class lever
What class of lever are scissors? First Class Lever
What class of lever is a wheel barrow? Second Class Lever
What does the mechanical advantage of a machine tell you? How many times the machine multiplies the effort force applied.
When prying open a can, would you rather use a short screwdriver, or a long one? Why? A long one. The longer the screwdriver, the greater the MA.
What are the 3 ways a machine makes work seem easier? By multiplying force, changing direction, or changing speed
What type of machine work by changing direction of the force? A pulley
Gears make work seem easier by changing this: Speed
Created by: judi829
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