Thermal Energy

A few of the terms we use during our Thermal Energy and Temperature investigations.
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radiation
Thermal energy is transferred through empty
space by electromagnetic waves
conduction
heat is transferred when molecules collide with each other within a material or when two different objects of different temperatures come in direct contact.
temperature
the average kinetic energy of the molecules in an object or substance (the degree of hotness)
thermal energy
the entire internal energy contained in the motion of the molecules
kinetic energy
energy in motion
conductor
a material that allows thermal energy to pass through (metals)
insulator
resists heat transfer, reduces the movement of thermal energy
Density
When particles are more closely packed together
Heat Flow
Energy moving from materials with a higher temperature to a lower temperature
Movement of liquid in a thermometer
When a material is heated or cooled,kinetic energy of the particles increases or decreases. Particles vibrate more and move farther apart.
Convection
In liquids and gases, warm material is less dense and rises while cool material is more dense and sinks.
example of radiation
heating your hands by a fire
conduction
method of heat transfer for a copper rod
radiation
how the sun heats the earth
convection
warmer air at the ceiling
temperature
measure of the average kinetic energy of a substance
hot air balloon
air in balloon is heated, molecules become less dense and balloon rises
down feathers
good insulator because traps air
good conductors
copper
relationship between mass and thermal energy
more mass=more thermal energy
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