Rubber Band Stretch Experiment

In the end you should have one graph with three lines each representing a different trial with a different rubber band.

Rubber band stretch experiment.

In this experiment you will find out how the stretching of a rubber band affects the amount of energy that springs out of it. You want the rubber band to visibly stretch out when you hang the quarters from it but not so much that it hits the bottom of the bottle. If you have conducted this experiment correctly you will notice the band s temperature rise when you stretch it and you will notice the temperature drop when you relax the band. Objective investigate how the distance of stretch in a rubber band at rest relates to the distance the rubber band travels after being released.

After each launch have your helper. While most objects expand when heated a rubber band contracts. One such experiment is the effect of heat on a rubber band. Stretch your science knowledge with this experiment that defies the laws of physics.

Repeating the experiment a total of three times will help you determine if your findings are consistent and reliable. The gap between the two marks will denote the extension value and so one mark should be drawn near the top and one near the bottom of the band. Make a line graph of the rubber band stretch length y axis vs. Shoot more rubber bands in the same way except stretch them back to 15 cm 20 cm 25 cm or 30 cm.

To see this in action begin by suspending a rubber band vertically then attach a weight to it. Measure carefully its stretched length with a ruler. Shoot at least five rubber bands for each stretch length. The mass hanger is hung from the band and an measurement of extension taken.

Supplies an empty 2 liter soda bottle permanent marker scissors pencil small thin rubber band a handful of quarters 20 25 tape paper clip hot tap water ice cubes large shallow. The water temperature x axis. The rubber band is hung from the clamp stand and two points are marked on the band with the pen. The rubber band changes temperature for a different reason 1 than the traditional heat pump but the effect is easy to sense and the test equipment doesn t require a.