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11 Cards in this Set
- Front
- Back
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A compound machine is made up of two or more simpler machines
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true
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Automobiles are 90 percent efficient
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false
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A machine's work output can't be greater than its input
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true
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Friction is a force that can make work easier
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false
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no machine is 100 percent efficient because some energy must be used to overcome
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a:speed c:friction
b:distance d:weight |
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The pivot point for a lever is called the
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a:resistance c:effort
b:fulcrum d:energy |
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Name six simple machines
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answer on your own
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What shound a machine do to be a machine
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write it
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Name some compound machines
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a
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What is a complexed machine
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Machines with gears, pulleys, wheels, and other parts
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What is the law of conservation energy
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the total amount of energy in a system that is always the same energy since energy cannt be created or destroyed
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