Discovering DensityPosted by Carlene Gordon
Fourth graders have learned that density is a property of matter that compares an object’s mass to its volume. Different objects may have different mass but the same volume, as we saw in class when we compared a baseball and a Wiffle ball. Students were asked if liquids could also have different mass and the same volume. To find the answer, students poured various liquids (maple syrup, corn syrup, oil, colored water) into a container and were amazed to see layers form. Students quickly concluded that these liquids must have different densities in order to form layers. The most dense liquids sank to the bottom and the least dense remained at the top.
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