Nathan's: Jordan's: (Sorry for the poor quality, I have not figured out how to work my new scanner yet! If you click on the picture, you may be able to see them better.) Well, we finally got to make our ocean boxes! First we made a box out of a heavyweight poster board to make our ocean box. Then we decorated them with foam aquatic animals.
The finished boxes. Then we did an experiment to see which is heavier, cold water or hot water. Using our Scientific Speculation Sheets, we first made our hypothesis. Then, we put hot water in the big bowl with blue food coloring, put cold water in a plastic cup with yellow food coloring, cut a small hole in the bottom, placed the cup in the bowl and let the water run out the bottom. You can see the the colder (yellow) water sank to the bottom!
Then we tried it again, with the cold (blue) water in the big bowl and the hot (yellow) water in the cup. The yellow water did not sink this time. Instead the yellow water mixed with the blue water making green water! We learned that cold water is heavier than warm water!