5 ideas, ranked. Strongest: Microplastic Filter Comparison. Click through to explore this as a live bubble map, grow any idea further, or re-score it for your situation.
Ranked by overall score (1-10), the average of Impact, Effort (lower is better, flipped), Originality.
Pass equal water volumes through cotton, sand, and mesh, then count captured particles under a microscope.
Collect rinse water from fleece and cotton fabrics to test which filter traps real fibers best.
Add fluorescent microbeads and compare capture rates under blue light for easier counting.
Measure flow time after each 100 milliliters to reveal when captured debris slows filtration.
Measure decibels at ten school locations and compare noise levels with student concentration scores.
Compare two sound-meter apps against a borrowed decibel meter to quantify measurement error.
Repeat readings during lunch, quiet study, and dismissal to reveal how schedules shape sound hotspots.
Place felt, cork, and foam beside a speaker, then compare decibel drops at fixed distances.
Record water temperature every five minutes while changing reflector angles to find the fastest heating position.
Test aluminum foil, emergency blankets, and white card to measure which reflects the most heat.
Repeat each angle test under clear and overcast skies to quantify how clouds change heating rates.
Map oven surface temperatures with an infrared thermometer to find heat leaks around the cooking chamber.
Expose seedlings to measured tones or silence and compare root length after two weeks.
Photograph sealed bread samples daily to test whether light exposure changes mold coverage over a week.
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