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Published byMary Golden Modified over 9 years ago
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Physics Vocabulary
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force a push or pull that causes an object to move, stop, or change direction a push or pull that causes an object to move, stop, or change direction
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friction a force that slows or stops motion when two surfaces rub against each other
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magnetism the attraction of an object containing iron to a magnet
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gravitation the force that pulls all objects in the universe toward one another the force that pulls all objects in the universe toward one another
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balanced forces forces acting on an object that are equal in size and opposite in direction, canceling each other out
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unbalanced forces forces that are not equal; when one force is greater than its opposite force, the object’s motion changes forces that are not equal; when one force is greater than its opposite force, the object’s motion changes
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energy the ability to cause change in position or temperature
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electric current the constant flow of electrons from through a conductor
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conductor a material that conducts electricity easily
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electric circuit the path along which electricity can flow
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insulator a material that does not carry electricity
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resistor a material that resists the flow of electricity in some way
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electromagnet a temporary magnet made by passing electric current through a wire coiled around an iron bar
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reflection the light energy that bounces off objects
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refraction the bending of light rays when they pass through a substance
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lens a piece of clear material that bends, or refracts, light rays passing through it
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temperature the average kinetic energy of all the molecules in an object
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Heat energy the energy of moving particles in a substance
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hydroelectric energy electricity generated from the force of moving water
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tidal energy a form of hydroelectric energy that produces electricity from the rising and falling of tides
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nuclear energy the energy released when the nucleus of an atom is split apart
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geothermal energy heat from inside the Earth
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solar energy the energy of sunlight
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