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
606 projects · 13 streams · every class
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9 projects
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 + Astronomy and Space
Estimate the Sun's power with a can of water
Measure how fast sunlight heats blackened water and estimate the solar constant.
- Intermediate
- 1 day
- 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
Mechanical Engineering + Environmental Science
Build a solar water heater
Make a flat-plate collector from black tubing and measure how much heat it captures.
- Intermediate
- 1–2 weeks
- 500–1,000
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
Chemical Engineering + Mechanical Engineering
Study heat exchanger effectiveness
Build a tube-in-tube heat exchanger and compare parallel and counter flow.
- Advanced
- 1–2 weeks
- 500–1,000
Materials, Energy and Other Branches + Agri-business and Food Science
Design a solar dryer for farm produce
Build a cabinet dryer and compare its drying time and quality with open sun drying.
- Intermediate
- 2–4 weeks
- 500–1,000
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