Energy and heat transfer Flashcards

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1
Q

Law of conservation of energy

A

Energy cannot be created or destroyed just transformed (under normal conditions).

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2
Q

Heat

A

Thermal energy that flows due to a difference in temperature heat flows from hot to cold.

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3
Q

Heat transfer

A

A method by which heat flows (conduction, convection, and radiation).

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4
Q

Conduction

A

Heat transfer within or between solid objects.

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5
Q

Convection

A

Heat transfer into or out of fluids.

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6
Q

Radiation

A

Heat transfer due to packets of energy called photons that can travel through many substances, even empty spaces.

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7
Q

Insulation

A

A material through which energy (electrical, thermal, or sound) cannot be easily transferred.

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8
Q

Conductor

A

A material through which energy (electrical, thermal, or sound) can be easily transferred.

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9
Q

Temperature

A

The measure of the average speed of all particles.

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10
Q

Thermal energy

A

The total energy of all particles in an object.

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