Ocean layers in a bottle, and ocean density test...

 Our latest unit has us exploring the depths of the ocean. Students have identified the 5 layers of the ocean: Sunlight, Twilight, Midnight, Abyssal, and Hadal. To drive home the light variations at each layer, students created the ocean layers in a bottle! While it is difficult to see the color variations in the bottom 2 layers, all 5 layers are present! Later that week, we compared the densities of tap water vs. ocean water. This experiment clearly shows that salt water has a higher density than tap water. After more than 5 days, the blue dye STILL had not dispersed to the bottom of the salt water bottle.










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