EQ WHAT IS THE RELATIONSHIP BETWEEN HEAT THERMAL

EQ: WHAT IS THE RELATIONSHIP BETWEEN HEAT, THERMAL ENERGY, & TEMPERATURE? §Write the EQ at the VERY TOP of the RIGHT page §Title your page: TEMPERATURE & HEAT

§ Temperature – measure of the AVERAGE value of KINETIC ENERGY of the molecules in random motion § 2 units in SI (Metric System) § Celsius (0 C) § Kelvin (K) § Thermal Expansion – ALMOST all substances EXPAND when heated and CONTRACT when cooled. The EXCEPTION is WATER! § Thermal Energy – sum of the KINETIC and POTENTIAL energy of all the particles in an object.

Temperature Conversion Equations… § Heat – thermal energy that flows from something at a HIGHER temperature to something at a LOWER temperature.

ANSWER THE EQ: WHAT IS THE RELATIONSHIP BETWEEN HEAT, THERMAL ENERGY, & TEMPERATURE? §Answer the EQ at the VERY TOP of the LEFT page §Video to summarize: (Heat v. Temperature) http: //usatestprep. com/movies/29/190/ 1295

EQ: HOW ARE CONDUCTION AND CONVECTION DIFFERENT? §Write the EQ at the VERY TOP of the RIGHT page §Title your page: TRANSFERRING THERMAL ENERGY

§ Thermal energy is transferred from place to place by: CONDUCTION CONVECTION Transfer of thermal energy by collisions between particles in matter (DIRECT CONTACT) *occurs in SOLIDS, LIQUIDS, and GASES. METALS are BEST conductors of heat!* Transfer of thermal energy in a FLUID by the movement of warmer and cooler fluid from place to place *occurs in FLUIDS (liquids and gases). RISING of WARMER fluid and SINKING of COOLER fluid forms a CONVECTION CURRENT!* RADIATION Transfer of energy by electromagnetic waves *Radiation is MOST important in GASES

CONDUCTION Examples: • Touching a HOT pot • “shocking” someone by dragging your feet • Melting ice in your hand DRAW this diagram of HEAT TRANSFER in your NOTEBOOK! CONVECTION RADIATION Examples: • Weather currents • Convection currents in the mantle of the earth • Water boiling in a pot Examples: • Heat you can FEEL • Heat from a fire • Heat from the sun • “wiggly” lines you see when you look across a HOT parking lot

§ Insulator – material in which heat flows slowly § Examples: wood, plastics (most), fiberglass, air, wool, clothing, oven mitts § Conductor – material in which heat flows quickly § Examples: most metals conduct heat/electricity

ANSWER EQ: HOW ARE CONDUCTION AND CONVECTION DIFFERENT? §ANSWER the EQ at the VERY TOP of the LEFT page §Video to Summarize: (Conduction) §http: //usatestprep. com/movies/29/190/4 48