Chemistry · Physical Chemistry
Find how temperature changes reaction rate with antacid tablets
Time how long an effervescent tablet takes to dissolve at different water temperatures.
- Easy
- 1–3 hours
- Under 250
606 projects · 13 streams · every class
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8 projects
Physics + Environmental Science
Build a solar oven and measure its efficiency
Make a box cooker from cardboard and foil and track how hot it gets compared with open air.
- Easy
- 1 day
- Under 250
Biology + Environmental Science
Track how composting changes kitchen waste
Set up compost bins with different mixes and record temperature, smell and breakdown for a month.
- Easy
- 2–4 weeks
- Under 250
Agri-business and Food Science + Biology
Make a dairy product and study the science
Set curd at different temperatures and with different starters and compare setting time and sourness.
- Easy
- 2–7 days
- Under 250
Physics + Environmental Science
Model the greenhouse effect in two bottles
Compare how fast air and carbon-dioxide-rich air warm under the same lamp.
- Easy
- 1 day
- Under 250
Environmental Science · Climate
Measure how trees cool their surroundings
Record air and surface temperatures under trees, on grass, on concrete and on tar through a day.
- Easy
- 2–7 days
- Under 250
Materials, Energy and Other Branches + Physics
Compare insulation materials for a cool box
Wrap identical cups in different materials and find which keeps water hot or ice cold longest.
- Easy
- 1 day
- Under 250
Earth Science · Meteorology
Build a rain gauge and keep a weather log
Make a rain gauge and thermometer station and record the weather daily for a month.
- Beginner
- 2–4 weeks
- Under 250
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