A form of energy caused from the random motion of the molecules in the substance.
heat
Heat always moves from _____ to ______
hot:cold
Heat moving by directly touching another object.
conduction
Heat moving through liquids and gases.
convection
Heat moving through electromagnetic waves
radiation
a material that easily allows heat to pass through.
conductor
a material DOES NOT easily allow heat to pass through.
insulator
What happens to objects when they are heated?
They expand
What happens to objects when they are cooled?
They contract
Which substance expands when cooled and contracts when heated? (The opposite of what normally happens.)
water
