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27 Cards in this Set
- Front
- Back
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The opposite ends of a magnet are called?
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Magnetic Poles |
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A device that measures electric current?
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ammeter |
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A device used to measure the potential difference of a circuit is?
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Voltmeter |
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transformer?
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a device used to increase or decrease the voltage of a power line |
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A material that does not have any resistance to the flow of electrons is a? |
superconductor |
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Current that flows in only one direction through a wire is called?
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direct current |
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The area around a magnet where the magnetic forces act is called its? |
magnetic field |
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When current in a circuit reverses its direction in a regular pattern it is?
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alternating current
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The property of matter in which there is a force of attraction or repulsion between unlike or like poles is called? |
magnetism |
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Groups of aligned atoms in a magnet are called? |
magnetic domains |
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When a current is passed through a coil of wire an ______is formed? |
electromagnet |
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A device that changes electrical energy to mechanical energy is an? |
electric motor |
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rotating a loop of wire in a magnetic field is a ? |
generator |
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The process by which moving a wire through a magnetic field produces an electric current is? |
electromagnetic induction |
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Superconducting trains would not lose _____to the environment? |
energy |
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A liquid fossil fuel formed from the remains of plants and animals is? |
petroleum |
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A method of separating liquid crude oil into its component parts is |
fractional distillation |
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Because they cannot be replace after they are used, fossil fuels and uranium are ___________ resources? |
Nonrenewable
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The place where controlled fission reactions are used to produce electricity is called a nuclear?
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reactor |
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The radioactive by-products of nuclear energy are?
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nuclear wastes |
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Thermal energy found in the inner parts of Earth is called _______energy?
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geothermal |
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The letters_______stand for the point of view that it is undesirable to have nuclear wastes stored or transported near you home?
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NIMBY
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Electricity can be produced from solar energy by a device called a ____ cell?
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Photovoltaic |
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Electricity produced from the kinetic energy of moving water is? |
Hydroelectricity |
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The generation of electricity from the rising and falling of ocean waters is called _____ energy.
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tidal |
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Fission |
a chain reaction starts from a single uranium atom that spontaneously splits into two parts, releasing two or more neutrons Control rods are used to absorb some of the neutrons Reaction can be used to generate electricity |
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Fusion |
Hydrogen nuclei are joined together at high temperatures |
