Thermal Energy, Heat, and Temperature

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Thermal Energy Noun

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[thur-muhl en-er-jee]

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Thermal Energy

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The total kinetic and potential energy of all the particles that make up an object.

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

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Heat Noun

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[heet]

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Heat

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The transfer of energy from a warmer object to a cooler object due to a temperature difference.

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Example: Heat moves from the warmer red area to the cooler blue area, showing energy transfer.

Front

Temperature Noun

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[tem-per-uh-cher]

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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: The image shows faster-moving particles in a warmer area and slower-moving particles in a cooler area, illustrating temperature differences.

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Transfer Verb

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[trans-fur]

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Transfer

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The movement of energy or matter from one object or place to another object or place.

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Example: Heat flows from a hot object to a cold object, transferring thermal energy.

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Absolute Adjective

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[ab-suh-loot]

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Absolute

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A term meaning definite or complete, often used to describe the lowest possible temperature, absolute zero.

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Example: Thermometers show absolute zero in Kelvin, Celsius, and Fahrenheit.

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Kinetic Energy Noun

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[ki-net-ik en-er-jee]

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Kinetic Energy

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The energy that an object or its particles possess as a result of being in motion.

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Example: A Newton's cradle shows kinetic energy as balls transfer motion energy to each other.

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Potential Energy Noun

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[po-ten-shuhl en-er-jee]

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Potential Energy

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The stored energy that particles have because of their position or arrangement relative to each other.

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Example: A girl holding a ball at a height shows potential energy; as the ball falls, it converts to kinetic energy.

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Joule Noun

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[jool]

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Joule

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The standard international (SI) unit of measurement for all forms of energy, including thermal energy and heat.

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Example: Heat flows from a hot object to a cold one, showing energy transfer in joules.

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Thermometer Noun

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[ther-mom-i-ter]

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Thermometer

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A scientific instrument used for measuring and indicating the temperature of a substance or environment.

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Example: A digital thermometer with a probe measures the temperature of a substance, displaying it on a screen.

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Celsius Scale Noun

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[sel-see-uhs skeyl]

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Celsius Scale

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A temperature scale on which water freezes at 0 degrees and boils at 100 degrees.

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Example: The image shows water freezing at 0°C and boiling at 100°C, demonstrating the Celsius scale.