SCIENCE LAB REPORT INTRODUCTION Explore the process of thermal energy transfer using a laboratory procedure. HYPOTHESIS Different masses will alter temperature at different rates while revealed to a similar amount of thermal energy. This is because the amount of mass affects an object’s ability to absorb thermal energy.  MATERIALS ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 300 g of dry sand 300 g of wet sand, drained Tap water (room temperature) utility knife 9 foam coffee cups (16 oz.) Mass balance 3 thermometers 1 or 2 120W heat lamps Timer (or clock) Hot plate Pencils Stir sticks 500 mL beaker 1 L beaker 50 g of aluminum wire 50 g of steel wire 50 g of lead pellets Wire cutters Tongs Long-handled strainer or spoon PROCEDURE 1. Gather Materials. 2. Set up samples to examine thermal energy transfer with varying material and mass. 3. Measure the change in temperature for different materials and mass. 4. Establish an initial temperature of the metal samples. 5. Assemble a “coffee cup” calorimeter. 6. Measure the mass of the water in the calorimeter. 7. Reassemble the calorimeter and position the thermometer. 8. Transfer metal samples to the calorimeter and measure the temperature change. 9. Compute the specific heat of each type of metal. 10. Check for errors. 11. Dispose of all materials according to your teacher’s directions. DATA  Specific heat Known values % error water 4.18 4.184 -0.10 concrete 0.88 1 -12.00 wood 1.8 1.76 2.27 aluminium 0.9 0.902 -0.22 glass 0.84 0.84 0.00 sand 0.83 0.29 186.21 steel 0.49 0.48 2.08 iron 0.44 0.444 -0.90 copper 0.38 0.386 -1.55 lead 0.16 0.128 25.00 gold 0.13 0.126 3.17 RESULTS The temperature of the bar did not change. The temperature of the water in both cups stayed the same. CONCLUSION [REQUIRED]  The temperature of the bar got warmer on the side that started cool. The hot water temperature decreased, and the cool water temperature increased. The heat from hot water Cup A transferred to the cooler water in cup B, which raised the temperature in Cup B, and decreased the temperature in Cup A. 

Lab Thermal Energy Transfer

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