Here are some densities computed by a student doing this laboratory experiment. RockWaterWooden block3.34 g/cm31.00 g/cm30.495 g/cm3The student noticed that the rock sank in water. After the experiment, she put the wooden block in the water and it floated. Use the densities above to explain why.
The rock sank because its density (3.34 g/cm³) is greater than the density of water (1.00 g/cm³). The wooden block floated because its density (0.495 g/cm³) is less than the density of water.
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As you have seen in this lab, the density of water is near 1 g/cm3. Anything with a density lower than this will float in water, and anything with a higher density will sink. Imagine you are building a submarine. How could you be sure to have it sink and then rise?
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