Biology · Microbiology
Investigate which mouthwash or toothpaste limits plaque bacteria
Compare how well mouthwashes inhibit bacterial growth on agar using the disc method.
- Advanced
- 1–2 weeks
- 250–500
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Science projects 6
Experiments, working models and investigations in physics, chemistry, biology, earth and space. Most can be done at home or in a school lab, and each one says what it costs and how long it takes.
6 Science projects
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Biology · Microbiology
Compare antibacterial effects of natural substances
Test garlic, neem, turmeric and honey against harmless bacteria using paper discs on agar.
- Advanced
- 1–2 weeks
- 250–500
Physics · Nuclear Physics
Detect cosmic rays with a cloud chamber
Build a diffusion cloud chamber with dry ice and alcohol and count particle tracks.
- Advanced
- 2–7 days
- 500–1,000
Chemistry · Organic Chemistry
Synthesise and test soap from cooking oil
Make soap by cold-process saponification under supervision and test its pH and lather.
- Advanced
- 2–4 weeks
- 250–500
Physics · Electronics
Build a crystal radio receiver
Receive AM radio with no battery using a coil, a diode and a long wire aerial.
- Advanced
- 1–2 weeks
- 250–500
Astronomy and Space · Planetary Science
Calculate the height of lunar mountains from a photo
Measure shadow lengths in a high-resolution Moon image and estimate the height of a crater rim.
- Advanced
- 2–7 days
- Free
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