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| measures how hot or cold something is compared to some standard-which usually corresponds to a degree mark on some chosen scale |
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| measures how hot or cold something is compared to some standard - which usually corresponds to a degree mark on some chosen scale |
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| expands when temp increases and contracts when temp decreases. |
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| expands when temp increases and contracts when temp decreases |
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| is used by most of the world, and it assigns a value of 0 to the temp at which water freezes and a temp of 100 to the temp at which water boils |
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is used by most of the world, and it assigns a value of 0 to the temp at which water freezes and a temp of 100 to the temp at which water boils.
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water freezes at 32 degrees and boils at 212 degrees |
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| water freezes at 32 degrees and boils at 212 degrees |
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· Its degrees are the same as the degrees on the Celsius scale with two notable differences: |
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Its degrees are the same as the degrees on the Celsius scale with two notable differences |
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· The degrees are called "kelvins"
· The scale starts at 0 with the lowest possible temperature (AKA absolute zero), which is the temperature at which a substance has no more kinetic energy to release (this corresponds to -273 degrees Celsius). |
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scale starts at 0 with the lowest possible temperature (AKA absolute zero), which is the temperature at which a substance has no more kinetic energy to release (this corresponds to -273 degrees Celsius).
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· The temperature of something corresponds to the kinetic energy contained with the molecules of a substance. It has to do with the average kinetic energy of all the molecules in that substance, which deals with the amount of molecular vibration within that substance. |
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The temperature of something corresponds to the kinetic energy contained with the molecules of a substance. Molecules in that substance, which deals with the amount of molecular vibration within that substance. |
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| That is why increasing temperature causes a substance to go from solid to liquid to gas - as the substance has greater and greater molecular vibration |
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| Energy always transfers from the hotter substance to the colder substance |
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· You touching a hot stove
· You touching a block of ice |
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| The energy that transfers between objects of different temperatures is called |
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| what does increasing temperature do? |
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| causes a substance to go from solid to liquid to gas - as the substance has greater and greater molecular vibration |
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| Matter doesn’t contain heat |
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· it lets off heat when it comes in contact with something that is a different temperature than it. |
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always transfers from the hotter substance to the colder substance:
You touching a hot stove
You touching a block of ice |
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| thermal energy or internal energy |
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Definition
| The amount of heat energy that an object has the potential to let off can |
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| The energy that transfers between objects of different temperatures |
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| doesn’t contain heat - it lets off heat when it comes in contact with something that is a different temperature than it. |
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| thermal energy or internal energy |
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| The amount of heat energy that an object has the potential to let off |
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