3.2 Heat and temperature......

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17 Terms

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Heat
A form of energy that is transferred between systems or objects with different temperatures.
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Temperature
A measure of the average kinetic energy of the particles in a substance.
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Thermal Energy
Energy stored in a substance due to the movement of its particles, measured in joules.
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Conduction
Energy transferred by direct contact between materials.
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Convection
Energy transferred by the motion of fluids, usually involving the movement of heat through liquids and gases.
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Radiation
Energy transferred by electromagnetic waves.
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Absolute Zero
The lowest possible temperature, -273 °C (0 Kelvin), at which particle motion stops.
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Joules
The unit of measurement for thermal energy and heat.
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Thermal Expansion
The tendency of matter to change in volume in response to a change in temperature.
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Kinetic Energy
The energy of motion, which in temperature context refers to the movement of particles in a substance.
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Heat Transfer
The movement of thermal energy from a hotter object to a cooler object.
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Specific Heat Capacity
The amount of heat needed to raise the temperature of a unit mass of a substance by one degree Celsius.
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Particle Movement
The motion of particles in a substance, which increases with higher temperature.
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Thermal Energy Transfer
The process by which thermal energy moves between substances due to temperature differences.
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Thermal Equilibrium
The state in which two objects in contact with each other reach the same temperature, resulting in no net heat exchange.
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Mass and Temperature Relation
The total thermal energy of an object varies with its mass and temperature.
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Heat Capacity
The amount of heat required to change the temperature of an object by a given amount.