Intro to Heat

Mr. Oey

HeatHeat is kinetic energy in a substance. Heat is the motion of the molecules in a substance, not the motion of the substance itself.

Energy that flows between two objects because of a difference in temperature. For example, a metal spoon in hot water.

Measuring Heat

Celsius

Freezing: 0 degrees

Boiling: 100 degrees

Fahrenheit

Freezing: 32 degrees

Boiling: 212 degrees

Heat Movement

Molecules move from places of higher temperatures to places with lower temperatures

Thermal EquilibriumMolecules move from warm to cold until they reach a balanced temperature

This balance is called thermal equilibrium.

Insulators & Conductors

6th Grade Science

Vocabulary

Insulator

an object that reduces the transfer of heat

Conductor

an object that easily allows the transfer of energy

Expansion & Contraction

VocabularySolid

particles vibrate in one place

Liquid

particles spin and move closely together

Gas

particles spin and move fast and far away from each other

Vocabulary

Expansion

as molecules are heated they spread out as they move around quickly and cause objects to become larger (expand)

Heating = Bigger

Contraction

as molecules are cooled they move closer together and cause objects to shrink (contract)

Cooling = Smaller

Heat Transfer

Kinetic Energy

VocabularyConduction

the transfer of heat by direct contact between solids

Convection Transfer of

heat in liquids & gases

Heat rises

Radiation Transfer of

heat in empty space w/o any particles

ExamplesConduction

A pot heating on a stove

Convection Boiling

water Heating a

home

Radiation Sun’s rays

heating a car