ICP FINAL #4 - Heat and Temperature

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Temperature

the AVERAGE kinetic energy of an object's particles due to non-directional motion at the atomic level

Heat flow

always goes from hot to cold

Conduction

the direct transfer of heat from one substance to another substance that it is touching

Convection

the transfer of heat by the circulation or movement of a liquid or gas

Radiation

the transfer of heat by rays or waves

Conduction (examples)

stovetop, seat-warmer

Convection (examples)

oven, blood (circulating), furnace

Radiation (examples)

sun, heat lamp

Melting point of water in °F

32°F

Melting point of water in °C

0°C

Melting point of water in K

273K

Boiling point of water in °F

212°F

Boiling point of water in °C

100°C

Boiling point of water in K

373K

Absolute Zero

the temperature at which particles stop moving entirely (impossible to actually reach)

Heat

the TOTAL kinetic energy of an object's particles due to non-directional motion at the atomic level

converting Celsius to Kelvin

C + 273 = K

converting Fahrenheit to Kelvin

must convert to Celsius first, THEN to Kelvin

Which temperature scale can be used for calculations in science?

Kelvins

Why do we have the Kelvin scale?

1) Absolute zero is zero
2) There are no negative temperatures

specific heat

The price you pay (in energy) to change the temperature of something.

high specific heat

difficult to change the temperature

example of high specific heat

water

low specific heat

easy to change the temperature

example of low specific heat

metal

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