Exam 5: Temperature and Heat

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Celsius degrees are larger than Fahrenheit degrees.

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The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass.An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water.The change in length of the ordinary glass rod will be __________ times the change in length of the Pyrex glass rod.

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Internal energy can only be changed by adding heat

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When ice melts,its temperature increases.

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The air temperature where the humidity reaches the saturation density is called the ___________.

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Solar energy

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Match each item with the correct statement below. -heat transfer by way of buoyant mixing in a fluid

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When ice melts,its temperature __________.

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The specific heat capacity of water is about twice the specific heat capacity of ice.The amount of heat required to boil 1 kg of water is twice the amount of heat required to melt 1 kg of ice.

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​Match each item with the correct statement below. -used in thermostats and some thermometers

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specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -The 1 kg block of ice melts into water.The amount of heat absorbed by the ice as it melts is

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A 4 kilogram block of ice is removed from a freezer where its temperature was maintained at -20 degrees Celsius.How much heat does the ice absorb as it is warmed to -10 degrees? (The specific heat capacity of ice is 2,000 joules per kilogram degree Celsius. )

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Match each item with the correct statement below. -can be increased by doing work on a substance or by adding heat to it

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An object transfers heat when its temperature is raised by contact with a

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__________ is transferred from a substance if it is exposed to something that has a lower temperature.

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Heating the air in a hot air balloon reduces the air's _________.

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Air at a temperature of 32°F has a relative humidity of 60%.If the temperature of the same air increases,the relative humidity increases.

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The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water.The amount of heat required to boil 1 kg of water is __________ times the amount of heat required to melt 1 kg of ice.

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The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass.An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water.The change in length of the ordinary glass rod will be 3 times the change in length of the Pyrex glass rod.

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Which is larger,a calorie or a joule?

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