Today, I did an experiment about salty water. It involved making a mixture of salt, earth, and water. After the mixture was made, I dripped it onto a sheet of paper so that the paper will get soaked and salty.
My hypothesis was that the paper will get dirty and salty even after I dry it. The independent variable was how much water I put on the paper.
The dependent variable was how much salt permeated the paper. The experiment was a controlled experiment because I control how much water I pour on the paper. The dry paper suggests the ocean floor if you could see it without all the water on top.
This experiment shows that the ocean is continually made saltier by the dirt and salt coming in from rivers.
If the salinity is 35ppt, in 500 grams of water, there are 17.5 grams of salt.
If the salinity is 29ppt, in 500 grams of water, there are 14.5 grams of salt.
If the salinity is 30ppt, in 1000 grams of water, there are 30 grams of salt.
My hypothesis was supported.
If I had to do this experiment again, I would use black paper to see the salt on it.