Simple machines quiz

Which is not an inclined plane?
Slides
Ramps
Stairs
Screw
Which is a wedge?
Axe
Ramp
Lever
None of the above
Which is not a screw?
Jar lid
A drill
A bolt
Stairs
What does a lever have?
Rigid beam
Fulcrum
Rigid beam
All of the above
Which is not a lever?
Fishing rods
Wheelbarrows
Jar lid
Crow bars
Are these all wheel and axles: door knob, a screwdriver, an egg beater, a water wheel,
Yes
No
Which is not a wheel and axle?
Steering wheel
Door knob
A drill
Crank from a water well
Which is not a pulley?
Cranes
Flag poles
Window blinds
None of the above
What is a pulley?
Wheel that carries a flexible rope, cord, cable, chain, or belt on its rim
A rope that's pulls heavy things
Which is not a simple machine?
Inclined plane
Lever
Wedge
None
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