Layering Liquids: Explore Density Science | Education.com - 2 views
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Amanda McCarthy on 12 Feb 12Students who are more advanced can find the density of the liquids and then explain why some liguids are "heavier" than others. This activity could also be used for higher grades that deal with finding densities of different substances. This activity can be connected to math by measuring the volumes of the liquids. -
Susie Beesley on 21 Feb 12It's fun to add the liquids out of order from densest to least dense and observe as they still seek their layer. I've done this with Karo syrup that I've added blue food coloring to, red water, and oil, but we add the water first, then the Karo syrup, and then the oil and the liquid seeks its layer. We extend this further by stirring the liquids too. Some of the layers separate out, but others remain mixed. It's a cool activity!
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5.1.2 "Describe the difference between weight and mass. Understand that weight is dependent on gravity and mass is the amount of matter in a given substance or material."
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Extension: After completing the experiment with oil and water, students could experiment with other liquids and make a hypothesis whether or not the density of the two liquids will be the same or different.
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In this activity students compare the mass and volume of different liguids by pouring the liquids into the same container and seeing which ones are "heavier" and "lighter."
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Density - or mass per volume - of a liquid is an important scientific concept that can be viewed with the naked eye. We see it all the time with oil and water. Oil has a different density than water so the two liquids do not mix. In this experiment your child will look at a number of liquids with different densities and compare them all to water. She'll build her science skills and learn one of the most fundamental scientific concepts she'll use for years to come.
