Thermal Energy Transfers

Front

Thermal Energy Noun

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[thur-muhl en-er-jee]

Back

Thermal Energy

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The total kinetic energy of the particles that make up a substance, which is related to its temperature.

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Example: Particles in a hot area move faster, transferring thermal energy to a cooler area.

Front

Thermogram Noun

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[thur-moh-gram]

Back

Thermogram

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An image that shows an object's temperature by using colors to represent different levels of heat radiation.

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Example: A thermogram of a hand shows temperature differences using colors, illustrating heat radiation.

Front

System Noun

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[sis-tuhm]

Back

System

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A collection of interacting objects or components that are studied together to model the movement of energy.

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Example: The solar system shows planets orbiting the sun, illustrating a system of interacting components.

Front

Closed system Noun

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[klohzd sis-tuhm]

Back

Closed system

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A system that does not exchange matter or energy with its surrounding environment, though perfect examples are rare.

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Example: A closed system with a boundary that does not exchange energy or matter with surroundings.

Front

Open system Noun

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[oh-pen sis-tuhm]

Back

Open system

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A system that freely exchanges both matter and energy with its surrounding environment, like a pot of boiling water.

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Example: A system where matter and energy can cross the boundary, like a boiling pot of water.

Front

Source object Noun

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[sors ob-jekt]

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Source object

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The object within a system that provides the energy for an energy transfer to another object.

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Example: Heating one end of a metal bar transfers thermal energy to the cooler end.

Front

Receiver object Noun

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[ri-see-ver ob-jekt]

Back

Receiver object

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The object within a system that gains or accepts energy from a source object during an energy transfer.

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Example: Arrows show thermal energy moving from a hot area to a cool area, illustrating energy transfer.

Front

Heat Noun

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[heet]

Back

Heat

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The amount of thermal energy transferred from a region of higher temperature to a region of lower temperature.

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Example: Heat flows from a hot area to a cold area, shown by arrows and color change.

Front

Temperature Noun

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[tem-per-uh-cher]

Back

Temperature

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A measure of the average kinetic energy of the individual particles that make up a substance.

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Example: Particles move faster in warmer water, showing higher temperature.

Front

Conduction Noun

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[kuhn-duhk-shuhn]

Back

Conduction

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The transfer of thermal energy between materials by the collisions of particles that are in direct contact.

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Example: Heating one end of a metal bar transfers thermal energy to the cooler end.