3.3 Word Scramble
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Question | Answer |
A wedge is a sloped surface that forces materials apart. | true |
A combination of fixed and moveable pulleys working together is called pulley system. | true |
The efficiency of such a machine is determined by multiplying the efficiencies of each simple machine. | true |
What is a simple machine, and what are the six types of simple machines? | A simple machine does work using only one movement. They are lever, wheel and axle, inclined plane, wedge, screw and pulley. |
Which factors determine whether a lever is a first class, second class, or third class lever? | Where the input and output force are relative to the fulcrum. |
what is a compound machine? | Two or more simple machines that operate together form a compound machine. |
wedge | shovel, knife, axe |
screw | drill, bolt, light bulb |
lever | ramp, hill, plow |
flagpole | pulley |
roller skates | wheel and axle |
crowbar | lever |
a levers pivot point | fulcrum |
a shaft that turns | axle |
a wheelbarrow | second-class lever |
how is the efficiency of a compound machine calculated? | by multiplying the efficiencies |
how can gears change change the size and direction of a force? | Because gears of different sizes turn at different speeds. |
EXPLAIN why a wedge that splits wood is an example of a compound machine. | Because it is two simple machines that are operating together. |
Created by:
myersrei4032
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