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Ch16 Scott Foresman
4th Grade Science
Question | Answer |
---|---|
long bar with a support | lever |
the support on which a lever rests | fulcrum |
the weight to be lifted or moved | load |
a simple machine with slanted threads along its sides | screw |
a special inclined plane used to split things or move things or hold things in place | wedge |
a ramp used to move things up or down | inclined plane |
a wheel and a rod joined to the center of the wheel. it is used to move or turn objects | wheel and axle |
a wheel with a rope, wire or chain around it. | Pulley |
the force used on a simple machine | effort |
One or more simple machnes combined together | complex machines |