INTERACTIVE LECTURE DEMONSTRATIONS PREDICTION SHEET-SPECIFIC HEAT Directions: Write your name at the top to record your participation in these demonstrations. For each demonstration, write your predictions on this sheet before making any observations. You may be asked to send this sheet to your instructor. Demonstration 1: 100 grams of water is initially at room temperature in a perfectly insulated cup (no heat can leak in or out). Heat energy is transferred to the water at a steady rate for 80 seconds, and then no more heat is transferred. Sketch to the right your prediction for the graph of the temperature of the water as a function of time. (Note that each on the graph represents an equal quantity of heat transferred by a heating coil immersed in the water.) | Compare the resulting graph to your prediction and explain its shape. How is the change in temperature related to the quantity of heat transferred to the water? Temp. Starting temp. 0 20 40 60 80 100 120 Time (sec) Record Temperatures Below: Starting Temperature: Ending Temperature: Change in Temperature: Record Temperatures Below: Starting Temperature: 22.0 Ending Temperature: 62.4 Change in Temperature: 40.4% Temperature (O 686 EK AQ Q PHOTS Next Outa Browser T inport Scale zoon in Zoom Out Dance Tangere Temperature 62.3 C Total Heat 9 Pelses 100 80 60 40 20 1:59 / 1:59 TEMPERATURE VS. TIME Time(s) 9LG 100