D 1. Insert one Styrofoam cup into a second Styrofoam cu p. D 2. Repeat Step 1 for the two remaining Styrofoam cups. D 3. Pour the entire contents of the sand bag (90 mL) into one of the stacked Styrofoam cups. '1 4. Use the thermometer to take a temperature measurement of the sand and record the value in Table 1. D 5 Stack the empty Styrofoam cups upside down on top of the ones with sand making an apparatus similar to a thermos. D 6. Use masking tape to secure the cups together where they meet. Make sure the cups are secure enough so that sand does not exit the cups when they are shaken. D 7. Use the stopwatch to keep time and gently shake the sand continuously for approximately five minutes. D 8. Quickly, but safely, use a pen or pencil to poke a hole in the top two cups. D 9. Immediately insert the thermometer to the hole so that the bulb is submerged in the sand. |:| 10.As quickly as possible remove the tape and shift the top two cups up so that you can see the reading on the thermometer. D 11. Take a final temperature reading of the sand. Record the value in Table 1. Table 1: Shaken Sand System Temperature Data Initial Temperature ("C) 21 Final Temperature (C) 24 Post-Lab Questions 1. What was the temperature change of the sand? Show your work. ATsand = Trinal - Tmitial 24 - 21 = 3'C or 3K Therefore the temperature change of the same is 3"C or 3K. 2. What was the change in internal energy of the system? Show your work. Hint: The specific heat for dry sand is about 0.80 J/g.K and the density for sand is 2.3 g/mL Amount of sand 90mL 3. Explain where the heat energy is coming from, if there is no work being done on the system because the volume is constant