2.
Choose the best answer.
A _____ is a machine that has no or few moving parts, but makes work easier.
bike tire
simple machine
leg muscle
3.
Choose all that apply.
Choose TWO ways that simple machines make work easier.
They change the direction of the force.
Less force is needed to move an object.
They do work without any force.
4.
Choose the best answer.
Using _____ to move an object is work.
patience
attention
force
5.
Match the simple machines with the examples.
inclined plane
wedge
screw
lever
wheel and axle
pulley
1 answer
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The best answer is: simple machine
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The TWO ways that simple machines make work easier are:
- They change the direction of the force.
- Less force is needed to move an object.
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The best answer is: force
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Match the simple machines with the examples:
- inclined plane: ramp
- wedge: knife
- screw: spiral staircase
- lever: seesaw
- wheel and axle: doorknob
- pulley: flagpole mechanism