heat and heat technology Flashcards

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1
Q

temperature

A

a measure of how hot or cold something is; specifically, a measure of the average kinetic energy of the particles in an object.

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2
Q

Thermal expansion

A

an increase in the size of a substance in response to an increase in the temperature of the substance.

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3
Q

absolute zero

A

the temperature at which molecular energy is at a minimum (0 K on the Kelvin scale or -273.16 degrees Celsius on the Celsius scale)

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4
Q

heat

A

the heat energy transferred between objects that are at different temperatures.

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5
Q

thermal energy

A

the kinetic energy of a substance’s atoms.

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6
Q

thermal conduction

A

the transfer of energy as heat through a material

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7
Q

thermal conductor

A

a material through which energy can be transferred as heat

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8
Q

thermal insulator

A

a material that reduces or prevents the transfer of heat

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9
Q

convection

A

the transfer of thermal energy by the circulation or movement of a liquid or gas

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10
Q

radiation

A

the transfer of energy as electromagnetic waves

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11
Q

specific heat

A

the quantity of heat required to raise a unit mass of homogeneous material 1 K or 1 degrees Celsius in a specified way given constant pressure and volume.

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12
Q

states of matter

A

the physical forms of matter, which include solid, liquid, and gas

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13
Q

change of state

A

the change of a substance from one physical state to another

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14
Q

insulation

A

a substance that reduces the transfer of electricity, heat or sound

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15
Q

heat engine

A

a machine that transforms heat into mechanical energy, or work

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16
Q

thermal pollution

A

a temperature increase in a body of water that is caused by human activity and that has a harmful effect on water quality and on the ability of that body of water to support life