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Heat Transfer Lab

Heat Transfer Lab. 8 th Grade Science Butler Middle School Lowell, MA. R. Rogers Mar 8, 2011. Thermal Energy Total Energy of all the moving molecules in an object Heat Thermal Energy moving from a warm object to a cooler object Heat transfers in 3 ways Conduction Convection Radiation.

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Heat Transfer Lab

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  1. Heat Transfer Lab 8th Grade ScienceButler Middle SchoolLowell, MA R. RogersMar 8, 2011

  2. Thermal Energy • Total Energy of all the moving molecules in an object • Heat • Thermal Energy moving from a warm object to a cooler object • Heat transfers in 3 ways • Conduction • Convection • Radiation

  3. Conduction, Convection, and Radiationoften occur together

  4. Energy • Ability to do work or cause change • Exists in many different forms • Kinetic Energy • Energy from motion or movement • Temperature • A measure of the average Kinetic Energy of all the molecules in an object

  5. Thermometer • Measures Temperature • Bulb Thermometer • Based on expansion & contraction of a liquid in a glass tube

  6. Temperature Scales K C F Water Boils Water Boils K & C degrees are same size F deg are smaller than C deg Ideal Room Temp, 68° F = 20° C Water Freezes Absolute Zero = Coldest Temp

  7. Experiment Cold Water in Plastic Pail Hot Water in Metal Can Place a thermometer in pail and in can. Wait for red line to stop moving. Record temperature of each, call this: “temperature at time 0”

  8. Experiment (continued) Place metal can with hot water in plastic pail with cold water Gently stir water in each container Record temperatures of water in each container every 1 minute

  9. Plot hot water temp and cold water temp vs time 90 80 Hot Water 70 60 Temperature (Deg C) 50 40 30 Cold Water 20 10 0 1 2 3 4 5 6 Time (min)

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