– The instructions to do the lab * it has 3 part A, B, C * please check out the file I uploaded ( including the report sheet to fill out while working on the labare )
– For part C of the lab here is the instructions to do:
The Cool Rubber Band
Predict what happens to the temperature of a rubber band as it is stretched. Predict what happens to the temperature of a stretched rubber band as it relaxes.
PROCEDURE
1. Stretch a rubber band while holding it to your lower lip, which you will find is sensitive to small temperature changes
2. Relax the stretched rubber band what is in contact with your lower lip
ANALYZE AND CONCLUDE
1. Does the speed at which you stretch the rubber band make a difference?
2. You touch your hand to the forehead of someone with a fever. You feel that his or her forehead is hot. How does your hand feel to the person with fever?
3. If the contracting rubber band causes your lip to cool down, what does your lips do to the contracting rubber band?
4. A hammer is hanging by a stretched rubber band. Hot air is then blown over the rubber band with a hair dryer. Is the hammer lifted upward or does it drop downward?
5. True or False: Experiments often raise more questions than they answer.
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