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25 Cards in this Set
- Front
- Back
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The transfer of heat by direct contact between two objects is?
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conduction
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The transfer of heat by electromagnetic waves is?
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radiation
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Latent heat given off by a substance as it changes from a liquid to a gas is called heat of?
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vaporization
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In thermodynamics, the amount of disorder in a system is called?
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entropy
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The first law of thermodynamics states that the total of the mass and energy in a system is?
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constant
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The process of a gas returning to the liquid state is called?
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condensation
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A device that measures the change in the thermal energy of a material is called?
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calorimeter
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Name the three factors affecting the amount of thermal energy of an object.
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1.Temperature of the object
2.Mass of the object 3. Specific heat of the substance |
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How do the molecules of an object move as the object is heated?
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more rapidly
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What is the term for the amount of heat that must be added to a certain mass of a particular substance in order to raise its temperature by 1 degree?
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specific heat
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What temperature scale assigns the value of 0 degrees to the freezing point of water and 100 degrees to the boiling point?
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celsius
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What is the most scientific principle showing the necessity for an act of creation?
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the second law of thermodynamics
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What is the "hidden" heat absorbed or released when a substance undergoes a change of state?
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latent heat
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When a liquid changes into a solid, the temperature at which this occurs is called
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freezing point
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Heat does not exist unless ________ is being transferred.
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thermal energy
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What do we call a special state of matter that exists where temperatures are too high for matter in its ordinary state to exist?
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plasma
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The transfer of heat through moving fluids is called?
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convection
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the temperature scale which measures absolute temperature
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Kelvin
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The internal energy of an object due to the random motions of its individual molecules is known as?
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thermal energy
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Liquids which evaporate rapidly are said to be?
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volitile
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The quantity of heat required to raise the temperature of 1 gram of water 1 degree C; based on the specific heat of water
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calorie
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A device that measures temperature is called?
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a thermometer
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The branch of physics that deals with heat energy is called?
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thermodynamics
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The point at which the amount of liquid water changing into a gas equals the amount of water vapor returning to the liquid state
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saturation
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The heat required to change a given mass of a solid already at its melting point into a liquid without changing its temperature is called the heat of_____________?
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fusion
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