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34 Cards in this Set
- Front
- Back
microwaves |
radar, Doppler, GPS, cell phones |
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visible light |
colors of the rainbow; the human eye can detect |
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ultraviolet rays |
enables your body to produce vitamin D, can cause cancer |
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x-rays |
can damage muscles and organs, used in medical diagnosis |
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radio waves |
TVs, AM, FM, home telephones |
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infrared waves |
night vision, thermal cameras |
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gamma rays |
physicians use them to destroy cancerous cells, found on Earth due to radioactive decay of certain elements |
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conduction, convection, radiation |
3 ways heat is transferred |
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white light |
contains all the colors of the spectrum |
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specific heat |
how much energy is required to warm 1 gram of a substance by 1degree celsius |
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static electricity |
the buildup of positive or negative electric charges on a material's surface |
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open circuit |
an incomplete circuit |
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closed circuit |
a complete circuit |
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black |
a color that absorbs all visible light |
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prism |
a piece of glass that separates white light into all the colors of the spectrum by refraction |
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violet |
the color with the shortest wavelength |
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red |
the color with the longest wavelength |
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heat |
the flow of energy between objects that have different temperatures |
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series circuit |
a circuit with only one path along which current electricity can flow |
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parallel circuit |
a circuit with multiple paths along which current electricity can flow |
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current |
flow of charged particles moving through a ciruit |
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direct current |
electrons flowing in the same direction in a current |
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the kinetic energy of its molecules increases |
What happens as a substance is heated? |
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temperature |
the average kinetic energy of the molecules in a material |
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alternating current |
the electrical charge moves back and forth at regular intervals |
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electromagnetic spectrum |
the full range of wavelengths, arranged from long waves with the lowest amount of energy to short waves with the highest amount of energy |
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conduction |
the movement of energy such as heat or electricity through direct contact |
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convection |
the transfer of energy by the flow of a liquid or a gas |
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electricity |
a flow of electrons, particles having negative electrical charges |
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generator |
a device that converts mechanical energy into electricity |
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radiation |
transfer of heat through electromagnetic rays, not requiring a medium to move it |
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current electricity |
the flow of electric charge through a circuit |
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resistor |
a material through which electricity has difficulty flowing |
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thermal expansion |
cause particles to move farther apart causing an increase in volume; ex: thermometer |