Photo Blog #4

 Photo Blog #4


For my isostasy (buoyancy) experiment, I decided to test different objects in the same amount of laundry detergent. All of these experiments took place on Saturday, April 26 around 5 pm. First I did all types of coins, which all sank. This concludes that all of the coins have a higher density than the laundry detergent that they were in.

 
 
 




















Then, I decided to test the buoyancy of a cotton ball in the same amount of laundry detergent. The cotton ball barely sank into the detergent, which leads me to believe that the cotton ball is definitely less dense than the laundry detergent, due to its elevation. This also means that the cotton ball is less dense than all of the coins as well.

 
 

After that, I decided to test the buoyancy of paper. It was important that I made sure that the two pieces of paper were the same size. I left one piece flat, while I crumpled up the other piece. Both pieces of paper sank a bit into the water, but the crumpled up paper stayed elevated for longer. This was the opposite of my prediction. This leads me to believe that both pieces of paper are less dense than the laundry detergent and the coins, but more dense than the cotton ball.

 






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