Comparing Densities Lesson
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Comparing Densities Lesson
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| Subject
Area |
Density calculation |
| Age
or Grade |
7th Grade |
| Estimated
Length |
1.5 hours |
| Prerequisite
knowledge/skills |
Ability to calculate density given mass and volume |
| Description
of New Content |
Relationships between different densities (liquid to liquid or solid to liquid) |
| Goals |
Illustrate why certain objects float or sink in various liquids |
| Materials
Needed |
Golf ball, beakers, liquids (tap water, salt water, oil, soda), Density Comparison Worksheet (pdf format) |
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Procedure
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Opener - What will happen when I drop this golf ball in the water? What about oil? Development - Follow worksheet and discuss questions with students Closure - Have students make up their own experiment (Try different liquids or a different object)
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| Evaluation |
Student-designed experiment, worksheet answers |
| Extensions |
Lab report and continuation with density |
| References | N/A |