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27 Cards in this Set
- Front
- Back
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Conduction |
transfer of energy in solids through contact (molecules are contact with one another) |
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Convection |
transfer of energy in liquids and gases due to differences in density ( warm gases and liquids rise because they are less dense, cooler gases, and liquids sink because they are more dense) |
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Radiation |
transfer of energy in waves; needs no medium (space) sun to Earth or light bulb (ex. radiation from the sun through space) |
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The difference between the forms of electromagnetic radiation? |
are the wavelengths |
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What objects absorb energy? |
dark, rough, and dull ( radiate the most energy) |
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What objects reflect light? |
light and smooth |
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Good absorbers of light are also... |
good radiators |
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Radiation from the sun hitting earth is shorter waved |
UV radiation |
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Longer waved when re-radiated back out into space |
Infrared Radiation |
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Specific Heat |
resistance to heating |
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The higher the specific heat... |
the longer and more energy required to heat the object up |
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Energy moves from... |
The source (highest temperature) to the sink (lowest temperature) |
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When traveling wavelengths become bent in their movement |
refraction |
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What does water need to do to go from a solid to liquid, and a liquid to a gas? |
gain energy (most needed to gain for liquid to gas) |
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What does water need to do to go from a gas to liquid, and a liquid to solid |
lose energy (most needed to lose for gas to liquid) |
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When a phase change occurs... |
Temperature stays the same |
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Mechanical Energy |
the sum of the potential energy and kinetic energy of an object |
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Kinetic Energy |
the energy of motion |
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Potential Energy |
energy related to position or phase ("stored" energy) |
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Temperature |
a measure of the average kinetic energy of the particles of an object |
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Joules (metric unit) |
measuring the transfer of heat energy from one object to another |
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Specific Heat |
the quantity of heat needed to raise the temperature of 1 gram of any substance by 1 degree Celsius |
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Melting |
solid to liquid |
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Freezing |
liquid to solid |
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Evaporation (Vaporization/Boiling) |
liquid to gas |
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Condensation |
gas to liquid |
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Sublimation |
gas to solid |
