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18 Cards in this Set
- Front
- Back
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Chemical Energy is
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energy from chemical changes.
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Complex machine is
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a machine made of many simple and compound machines.
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Compound machine is
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a machine made of two or more simple machines.
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Efficiency is
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the percent of useful work obtained from machines.
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Effort arm is
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the distance from the fulcrum to where the effort is put on a lever.
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Energy is
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the ability to do work.
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Friction is
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a force that acts against the motion of one surface over another.
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Fulcrum is
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the point where a lever is supported.
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Gravity is
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the force that pulls things toward the center of the earth.
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Inclined plane is
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a flat surface that is tilted.
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Inertia is
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the tendency of an object to stay in motion or a resting object to stay still.
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Lever is
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a simple machine used to hold objects together (nail) or lift objects (seesaw, crowbar, hook end of hammer)
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Pulley is
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a simple machine made of a wheel and a rope.
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Simple machine is
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a machine made of only one or two parts.
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Wedge is
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a simple machine used to cut or split an object.
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Wheel and axle are
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a simple machine that has a center rod (axle) attached to a disc (wheel).
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Mechanical energy is
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the energy an object gets from its motion.
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Effort is
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the force used on a lever.
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