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17 questions
Wheels, levers, pulleys, ramps, screws, and wedges are forms of _______________________.
potential energy
simple machines
chemical changes
dark matter
A catapult is an example of a _________ .
lever
wheel and axle
screw
inclined plane
The pivot point of a lever is called the _________.
load
bar
effort
fulcrum
Gears are wheels with teeth.
True
False
Stairways are a combination of a ______ and a ladder.
screw
ramp
pulley
wheel
Which of the following is not an example of a ramp? (inclined plane)
A spiral staircase is a lot like a ___________.
pulley
screw
wheel and axle
wedge
A screw is like a:
ramp wrapped around a rod.
wedge with a stick
wheel moving up a ramp
pulley lifting a post
A prosthetic arm is an example of a _________.
ramp
screw
pulley
lever
When you use a simple machine you need to use_________force.
more
less
the same amount of
What class lever is this?
Class 1
Class 2
Class 3
What simple machine is used here?
a screw
an inclined plane
a wedge
a lever
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