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Keep the Heat
Transcript of Keep the Heat
Science Fair Project Hypothesis We think that a material with a higher density will retain the heat of an object longer than a material with a lower density. The first material that we think would retain the heat the logest out of the five, would be tinfoil. The last would material that would not have a stronger efficiency to retain the heat as much would be plastic. Materials List •Layers of plywood
•Two cups (one smaller than the other)
•Cloth Procedure 1.Make sure you have the keep the heat containment unit. (See apparatus)2.Remove the top layer of balsa wood.3.Insert the material you want to use to retain the heat, in the space between the medium, and small sized beaker.4.Insert the boiling water in the small sized beaker.5.Quickly put the top layer of balsa wood on the top of the containment unit.6.Insert the thermometer in the 1.5 cm hole in the center of the top layer of balsa wood and record the temperature of the water on a piece of paper.7.Wait 1 minute and record how hot the water is.8.Wait 4 more minutes and record how hot the water is.9.Wait 5 more minutes and record how hot the water is.10. After you have recorded the data repeat steps 2-9 9 more times to get an accurate data set.11. Repeat all of these steps for all of the materials. Apparatus 1.Pile 9 layers of plywood (it has to be 1 foot squared wide) on top of each other.2.Glue all of the layers together.3.Make 4 walls of plywood on top of the layers using the same dimensions as before.4.Glue the walls to the layers of plywood.5.Stack one more layer of plywood on the walls you made, again using the same dimensions. 6.Tape the top layer of plywood onto the walls.7.Cut a hole in the center of the top layer of balsa wood about the size of a hole that a hole-puncher would make.8.Remove the top layer of plywood by detaching the tape of the top layer of plywood.9.Insert medium sized beaker into center of the empty space inside of the plywood walls.10.Make sure the beaker is as tall as the surrounding walls. If not then cut off as much as needed.11.Glue the beaker to the balsa wood where you set it before.12.Then add a small sized beaker (that is as tall as the medium sized beaker you used before) in the center of the same place you put the medium sized beaker.13.Glue it to the place you set it on.14.Add the top layer of plywood again, reattaching the tape. Conclusion Over all, we reject our hypothesis because plastic has a higher density than fabric, but fabric retained the heat longer compared to the plastic. Some parts of our hypothesis is correct, because tinfoil has a higher density than the other materials like we predicted, and it retained the heat of the boiling water the longest. It connects to human interaction because someone can use these results to see which material retains the heat inside an object the best. They can use this material to keep their coffee or tea hotter. The fabric and tinfoil retained the heat better than any other material, but the results for the two materials were relatively the same temperatures. ‘Air’ (nothing surrounding the can) was the worst. The temperatures measured was worse than the others dropping low. To improve this project, next time, we would add more time for the boiling water to sit. If ever to do an extension, we would do keep the cold. An example of the experimenting could be to place an ice cube on a surface in a specific time lapse, and measure the amount of water that melts away from the ice cube at different times. We would use different materials to test which of the materials would prevent the ice cube from melting quicker. RAINBOWS! Keep the Heat