5th grade chapter 14 section 4 - what is thermal energy
CHAPTER 14 SECTION 4
THERMAL ENERGY–the total of all the kinetic and potentialenergy of the atoms in an object• When the thermal energy of a substanceincreases, its particles move faster• A change in thermal energy can lead to achange in phase
Thermal Energy and Temperature–Temperature - measure of thermal energyThe temperature of an object is related tothe average kinetic energy ofall its particleshttps://www.youtube.com/watch?v=f1eAOygDP5s
Conduction–the transfer of heat betweenobjects that are in contact.• The stove heats the pan above itby conduction.
Convection–the transfer of heat by a moving liquidor gas.• For example, cool water sinksunder warm water.• The warm water will rise.• This creates a circular currentcalled a convection current.
Radiation–the transfer of heatby electromagnetic waves.• All objects radiate heat, hot objectsradiate more than cool ones.• The part of theelectromagneticspectrum that isrelated to heat isinfrared radiation.