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32 Cards in this Set
- Front
- Back
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Whatare the 2 forces of energy?
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kinetic and potential
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What is the potential energy?
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the energy of an object at rest, not moving(stored energy)
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What is kinetic energy?
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the energy of an object in motion, moving
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What is speed?
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how fast an object is moving
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What is lightning?
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the discharge of electricity in the air
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What stops the flow of electrons?
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an open circuit
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How do you strengthen an electromagnet?
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by increasing the number of coils around it
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Who innovated the light bulb?
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Thomas A. Edison
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Name objects that use an electromagnet?
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televisions, electric motors, telephones, andcomputers
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What did Benjamin Franklin discover?
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lightning is a natural form of electricity
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What is friction?
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a force that slows the speed of an object
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What does friction cause?
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friction causes objects in motion to slow downand it produces heat
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What are the ends of a magnet called?
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poles, north and south
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What is a pole?
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ends of a magnet where the magnetic field isstrongest
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Name the 3 types of energy that electricity canbe changed into.
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heat, light, and mechanical
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What did Michael Faraday discover?
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That electricity can be made by passing a magnetthrough a coil of wire
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What are matter and energy?
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the two groups that everything in the world canbe divided into
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What is force?
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a push or pull that causes an object to move,change direction or speed
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How do people make electricity?
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with generators
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What is a toaster an example of?
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heat energy
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What is a lamp an example of?
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light energy
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What is an example of mechanical energy? |
any machine that uses electricity for power
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What creates an electric current? |
a continuous flow of electrons
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What does an insulator do? |
material that does not allow electricity to floweasily through it
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What is wood? |
a good insulator
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What is a conductor?
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material that allows the flow of electricitythrough it
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What is metal?
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a good conductor
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What allows the flow of electrons?
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a closed circuit
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What is a series circuit?
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a circuit with only one path to follow
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What is a parallel circuit?
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a circuit with two or more paths to follow andis found in homes, schools, etc
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What is another form of energy caused by the movementof electrons?
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magnetism
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What is a permanent magnet?
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magnet where the magnetic properties are alwaysthere
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