Density!
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Students will learn how to calculate the density of objects, and construct and calibrate a homemade hydrometer to measure the relative density of different liquids.
MATERIALS
Object Density:
- Basin with water
- Objects of different sizes / shapes
- Measuring cup
- Ruler
- Scale (*There are free scale apps for Android and IOS!)
Hydrometer:
- Straw
- Scissors
- Paperclip
- Marker
- Ruler
- Various liquids
Buoyancy!
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Students will learn about buoyancy and density while completing the Cartesian Diver experiment.
MATERIALS
- A plastic bottle with sealable lid (1L or 2L pop bottle)
- A straw (alternative: pen cap)
- Paperclips (or other small weights)
- An elastic (alternative: paper clip)
- Water
Note: if using a pen cap, make sure there are no holes on the top. If it does, cover holes with tape or clay.
