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40 Cards in this Set
- Front
- Back
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Insulation is needed to prevent |
the unwanted transfer of thermal energy into or out of a building. |
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What happens to a substance's temperature during a change of state? |
The temperature stays the same. |
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Thermal energy added to a substance during a change of state causes the substance's temperature to |
increase. |
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The glass of a window pane feels cooler to the touch than the wood frame surrounding the glass. This is because |
wood is a better thermal insulator than glass. |
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What does the average kinetic energy of an object's particles tell you? |
It tells you the temperature of the object.
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What is NOT an example of thermal expansion? |
Wood warping when soaked in water. |
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The boiling point of water on the Fahrenheit, Celsius, and Kelvin scales is, respectively, |
212 degrees Fahrenheit, 100 degrees Celsius, 373 Kelvin |
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The transfer of thermal energy through a substance by direct contact is called |
thermal conduction. |
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What is NOT an example of thermal energy transfer? |
conversion |
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Two substances with equal masses have temperature of 55 degrees Celsius. If the specific heat of the first substance is three times greater than that of the second substance, how much more energy will the first substance have given up by heat when both substances have cooled to 25 degrees Celsius? |
three times as much energy |
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The hot air that you see rising from the payment on a hot summer day is an example of |
convection. |
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What is a gas that traps solar energy called? |
greenhouse gas |
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In which state does water have the lowest average kinetic energy? |
solid |
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Thermal energy added to a substance that is not changing state causes the substance's temperature to |
increase. |
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The amount of a substance does NOT affect |
the temperature of the substance. |
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An example of thermal expansion of a solid is |
an expansion joint in a bridge. |
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A calorimeter uses the increase in the temperature of water to |
measure the heat given up to the water by another substance. |
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If two substances have the same temperature, then |
the particles have the same average kinetic energy. |
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The temperature of a substance increases as |
the average kinetic energy of its particles increases.
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When you add heat to a combination of substances, breaking bonds and forming a new substance, the process is called a |
chemical change |
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What is NOT a common state of matter? |
superfluid |
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Water boils at 212 degrees Fahrenheit, which is equal to |
100 degrees Celsius |
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In which state do particles move fastest and with little effect on each other? |
gas |
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The temperature of the human body is typically at 98.6 degrees Fahrenheit, which is equal to |
310 K |
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Thermal pollution affects nearby bodies of water by dumping |
heated water. |
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How are a hot-water heating system and an active solar-heating system similar? |
Water is heated and circulated through a system of pipes. |
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The inside of a refrigerator is kept cool by |
the evaporation of refrigerant, which absorbs thermal energy. |
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The lowest possible temperature is |
0 Kelvin |
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A 0.4 kg aluminum part increases its temperature by 25 degrees Celsius. How much thermal energy is transferred to the part by heat? (specific heat of aluminum =900J/kg X degrees Celsius) |
9,000 Joules |
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Railroad tracks have gaps between the rails so that they will not buckle in hot weather because of |
thermal expansion. |
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States of Matter Name the state of where the particles do not overcome the attraction between them, and so vibrate in place. |
Solid |
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States of Matter Name the state of matter where the particles move fast enough to overcome some of the attraction between them, and so slide past one another. |
Liquid |
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States of Matter Name the state of matter where particles move fast enough to overcome most of the attraction between them, and so move independently of one another. |
Gas |
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Name the temperature at which molecular energy is at a minimum. |
absolute zero |
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This is an increase in the size of a substance in response to an increase in the substance's temperature. |
thermal expansion |
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This is a measure of the average kinetic energy of the particles in an object. |
temperature |
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This is the process of breaking bonds and forming bonds to make new substance. |
chemical change |
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This is any device(s) that uses heated water or heated air to warm buildings. |
heating system |
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This is a device that measures heat. |
calorimeter
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The energy needed to change the temperature of 1 kg of a substance by 1 degree Celsius. |
specific heat |
