Notes yb lab 1 and lab 2 hot and cold and tracking the heat
InvestigatingHeat and Temperature
LabsLabs Lab 1: Hot and Cold Lab 2: Tracking the Heat
Hot and Cold:Hot and Cold:Comparing Heat and TemperatureComparing Heat and Temperature
Objectives: The student will illustrate andexplain the results of addition orsubtraction of thermal energy onthe motion of molecules Distinguish between heat andthermal energy
Key Terms:Key Terms: Heat Temperature Thermal Energy
Heat The energy transferred betweentwo substances which are atdifferent temperatures
Temperature Themeasurement ofthe averagekinetic energy ofthe molecules ofa substanceKelvinCelsius
Thermal Energy The term usedto describe thetotal energy ofthe particlesthat make up asubstance in anenergyexchange
Essential Learnings Hot and cold are relative terms,defined by the individual much likelarge and small, and they are notscientific terms.
Essential Learnings Molecules of all substances,regardless of their state of matter(solid, liquid or gas) are in constantmotion and have Kinetic Energy Temperature is directly related tothe rate of motion of molecules It is the measure of average kinetic energy
Essential Learnings Thermal energy is defined as theenergy of a substance, both itsaverage kinetic energy (temperature)and the kind of molecules in thesubstance
Essential Learnings Heat is energy that is transmittedbetween substances based ondifferences in the kinetic energy oftheir molecules Heat moves from “hot” to “cold”
Tracking The Heat:Tracking The Heat:Transferring Thermal EnergyTransferring Thermal Energy
Objectives: The student will investigate andunderstand processes that transferenergy between substances Understand that thermal energyis the total energy of the particlesthat make up a substance
Objectives: The student will investigate andunderstand processes that transferenergy between substances Understand that heat is thetransfer of energy from oneobject of higher temperature toone object of a lower temperature
Objectives: The student will investigate andunderstand processes that transferenergy between substances Understand that temperature is ameasure of the average kineticenergy of the particles in asubstance
Thermal Equilibrium Term used to describe theequalization of temperatures betweena substance and its surroundings.
Conduction The transfer of thermal energythrough direct contact
Essential Learnings When two materials are in contact,energy is transferred from the onewith the higher temperature to theone with the lower temperature byconduction due to the kineticenergy of the particles in contact
Essential Learnings The vibrating molecules from theobject with the higher temperaturecome in contact with the molecules ofobject with the lower temperature. Energy is transferred causing thecooler object to “warm up” asmolecule vibration increases
Essential Learnings Materials at Thermal Equilibriumhave the same temperature; objectscome to thermal equilibrium with theirsurroundings Room temperature objects don’t feel likeroom temperature because of human bodytemperature, insulators and conductors.
Essential Learnings Hypothermia is a medical conditionwhen a human’s body temperaturedrops from its normal bodytemperature to one much lowerbecause of the lost heat to thesurrounding environment