6 Temperature Measure of average kinetic energy of the particles F- boiling = 212- freezing = 32C- boiling = 100-freezing = 0Kelvin- boiling = 373- freezing = 273Absolute zero = -273 Celsius
7 Heat The transfer of thermal energy is heat. Moves from a warmer object to a cooler objectSpecific Heat – the amount of energy required to raise the temperature of 1 kilogram of a material by 1 Kelvin. (in Joules)
8 Heat always flows from warmer to cooler objects. Cup gets cooler while hand gets warmerHeatThe flow of thermal energy from one object to another.Heat always flows from warmer to cooler objects.Ice gets warmer while hand gets cooler
9 Specific HeatMaterials with high Specific Heat can absorb a great deal of energy without a great change in temperature.Ex: Water requires 4,180 joules to raise the temperature 1 degree Kelvin.
10 Land heats up and cools down faster than water Specific HeatSome things heat up or cool down faster than others.Land heats up and cools down faster than water
11 Why does water have such a high specific heat? water metalWater molecules form strong bonds with each other; therefore it takes more heat energy to break them. Metals have weak bonds and do not need as much energy to break them.
12 Heat Transfers Conduction- heat transferred through direct touch Convection- heat transferred through the movement of currents in a fluidRadiation- heat transferred through electromagnetic waves
14 Conductors and Insulators Conductor- transfers thermal energy wellEx: metalsInsulators- transfers thermal energy very poorlyEx: Wood, paper, plastic, gases in the air
15 Changes in State of Matter Depends on how much thermal energyVaporization- matter changes from liquid to a gasEvaporation- vaporization at the surfaceBoiling- vaporization below the surfaceMelting- solid to liquidFreezing- liquid to solidCondensation- gas to liquid