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22 Cards in this Set
- Front
- Back
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What are the UNITS of measurement SPECIFIC HEAT?
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J/(kg K) OR J/(g C)
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What is CONDUCTION?
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The transfer of thermal energy (heat) or electrons (electricity) between particles that are touching.
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What is the specific heat of water?
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4,180 J/(kg K)
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Is wood a conductor or an insulator?
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Insulator
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What FORMULA is used to calculate a CHANGE IN THERMAL ENERGY?
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Change in thermal energy = mass x specific heat x change in temperature
OR ^E = m x cp x ^T |
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What is the direction of heat flow between substances?
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From a substance at a higher temperature to a substance at a lower temperature.
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What is SPECIFIC HEAT?
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The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 kelvin OR to raise 1 g of a substance by 1 degree Celcius.
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Is a gas, such as air, a good conductor or insulator?
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Insulator
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What is HEAT?
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The movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature.
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How does radiation differ from conduction and convection?
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Radiation can travel through a vacuum. Conduction and convection both require a medium to move through.
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What is a CONDUCTOR?
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A substance through which electrons move freely, transmitting heat or electricity.
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Are ceramics and tiles good conductors or insulators?
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Conductors
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What form of heat transfer is used to heat food using a heat lamp or roast marshmallows and hot dogs?
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Radiation
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What is CONVECTION?
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The transfer of thermal energy by the movement of currents in a fluid (liquid or gas).
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How does fiberglass behave as an insulator?
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A tangle of thin glass fibers traps air. Air is a poor conductor of heat and trapped air can not transfer heat by convection.
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Is plastic a conductor or an insulator?
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Insulator
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Are metals good conductors or insulators?
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Conductors
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What is RADIATION?
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The transfer of energy (light or heat) by electromagnetic waves?
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What are three methods of heat transfer?
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Conduction, convection, and radiation.
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What is an INSULATOR?
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A material that does not easily transfer thermal energy or electric current between its particles.
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How do feathers on a bird or in a down jacket provide insulation?
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They trap air which is a poor conductor of heat. Also, trapped air can not transfer heat through convection.
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How can window shades or awnings keep a house cooler on a sunny day in summer?
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It blocks radiation from the sun.
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