Thermal Energy

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ZyeTazja McArthur
March 21, 2013
6th Per

Heat Boggle Project
Conduction
-The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential Example: Teaspoon dipped in hot water-Touching a stove and being burned -Ice cooling down your hand-Boiling water by throwing a red hot piece of iron in it Convection

-The movement caused in a fluid of hotter and less dense material to rise, and colder, denser material to sink under the influence of gravity, which causes the transfer of heat Example: Hot air rising, cooling, and falling (currents) -An old-fashioned radiator –A pot boiling water Radiation

-Energy as electromagnetic waves
Example: -Heat from the sun warming your face -Heat from a light bulb -Heat from a fire -Heat from anything else which is warmer than its surroundings Fahrenheit
-It’s a scales based on 32 for the freezing point and 212 for the boiling point -Daniel Gabriel Fahrenheit invented the mercury thermometer in 1714 and developed the temp. scale -Generally used in English speaking countries in 1970

-William John Macquorn Rankine used it as the basis of his absolute temperature scale Celsius
-temperatures of the freezing and boiling points of water are divided into 100 degrees -The freezing point is taken as 0 degrees Celsius and the boiling point as 100 degrees Celsius -widely known as the centigrade scale

-Swedish astronomer Anders Celsius established the scale in 1742 -Temperatures on the Celsius scale can be converted to equivalent temperatures on the Fahrenheit temperature scale Kelvin
-The temperature scale is named after the British mathematician and physicist William Thomson Kelvin -proposed in 1848
-is often used in astronomy and space science
-The Kelvin scale is similar to the Celsius scale
-the zero point in the Kelvin scale is the coldest possible temperature (absolute zero) Laws of Thermodynamics
1st law
-Energy can be neither crated...
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