Biology · Cell Biology
Observe osmosis in potato strips
Soak potato strips in salt solutions and find the concentration at which they neither gain nor lose mass.
- Easy
- 1 day
- Under 250
606 projects · 13 streams · every class
Science projects 113
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.
113 Science projects
We couldn't find an exact match. These are the closest 113, found by leaving out the time limit and the tool.
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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
Environmental Science + Electrical Engineering
Build a wind turbine and find the best blade design
Build a small wind turbine on a DC motor and test how blade number, angle and length change the voltage.
- Intermediate
- 1–2 weeks
- 250–500
Biology + Sports and Exercise Science
Measure how exercise changes pulse rate and recovery
Record pulse before, during and after exercise for several volunteers and compare recovery times.
- Easy
- 1 day
- Free
Physics · Waves
Measure the speed of sound with two phones
Use two phones with an acoustic stopwatch app to time a clap over a known distance.
- Easy
- 1–3 hours
- Free
Environmental Science · Waste Management
Audit your school's waste for a week
Sort and weigh one week of school waste by type and propose how to cut the largest share.
- Easy
- 1–2 weeks
- Under 250
Environmental Science + Data
Analyse 50 years of your city's temperature data
Download long-term temperature records and test whether your city has warmed, and by how much.
- Intermediate
- 1–2 weeks
- Free
Physics · Current Electricity
Verify Ohm's law and find where it fails
Plot current against voltage for a resistor and a bulb and explain the difference.
- Easy
- 1–3 hours
- Under 250
Physics · Electromagnetism
Electromagnetic braking in a copper pipe
Time a magnet falling through copper, aluminium and plastic pipes and show how eddy currents slow it.
- Intermediate
- 2–7 days
- 250–500
Physics · Electromagnetism
Build a homopolar motor and measure what changes its speed
Make the simplest electric motor from a cell, a magnet and wire, then test how magnets change its speed.
- Easy
- 1–3 hours
- Under 250
Environmental Science + Physics
Compare the energy use of bulbs
Measure the brightness and heat of LED, CFL and filament bulbs and calculate the yearly cost of each.
- Easy
- 1–3 hours
- 250–500
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
Physics · Oscillations
Find g with a simple pendulum and a phone
Time pendulums of different lengths and get the acceleration due to gravity from a straight-line graph.
- Easy
- 1–3 hours
- Under 250
Astronomy and Space + Pure Mathematics
Measure the Earth's circumference like Eratosthenes
Measure a stick's shadow at local noon in two cities and calculate the size of the Earth.
- Intermediate
- 1 day
- Free
Chemistry · Analytical Chemistry
Separate ink colours with paper chromatography
Separate the dyes in marker pens on filter paper and calculate an Rf value for each colour.
- Beginner
- 1–3 hours
- Under 250
Physics · Optics
Build a spectroscope from a CD and analyse light sources
Split light with a CD and compare the spectra of the Sun, LEDs, CFLs and flames.
- Easy
- 1 day
- Under 250
Biology · Molecular Biology
Build a DNA model and explain replication
Make a twistable DNA model with colour-coded bases and use it to demonstrate replication.
- Beginner
- 1 day
- Under 250
Physics · Magnetism
Map the magnetic field of bar magnets with a phone
Use the phone's magnetometer to measure how field strength falls with distance from a magnet.
- Easy
- 1–3 hours
- Under 250
Astronomy and Space · Planetary Science
Build a scale model of the solar system on your street
Shrink the solar system so the Sun is a football and place the planets at true scale distances.
- Beginner
- 1 day
- Under 250
Biology · Zoology
Survey the birds of your neighbourhood
Do weekly point counts of birds at three sites and compare species between habitats.
- Easy
- 2–4 weeks
- Free
Astronomy and Space · Observational Astronomy
Make a model of the solar and lunar eclipses
Use a torch and two balls to show how the Moon's shadow and the Earth's shadow cause eclipses.
- Beginner
- 1 day
- Under 250
Astronomy and Space + Aerospace Engineering
Design a Mars habitat and justify every choice
Design a base for four astronauts and explain how it provides air, water, food, power and radiation shielding.
- Intermediate
- 1–2 weeks
- Under 250
Physics + Music, Theatre and Writing
Study the physics of a musical instrument
Measure how the length of a string or the water level in a bottle changes the pitch.
- Easy
- 2–7 days
- Under 250
Chemistry · Electrochemistry
Make an electroplating cell and copper-plate a key
Coat a steel key with copper and find how plating time changes the mass gained.
- Intermediate
- 1 day
- 250–500
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