Biology · Microbiology
Grow bacteria from everyday surfaces
Swab phones, door handles and washed hands onto agar and compare the colonies that grow.
- Intermediate
- 2–7 days
- 250–500
606 projects · 13 streams · every class
Science projects 23
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.
23 Science projects
We couldn't find an exact match. These are the closest 23, found by leaving out the class.
Or look inPhysicsChemistryBiologyEnvironmental ScienceEarth ScienceAll ScienceTwo-subject projectsHelp me choose
Chemistry + Nutrition and Food
Measure the vitamin C in fruit juices
Titrate juices with iodine and starch to compare how much vitamin C each contains.
- Intermediate
- 1 day
- Under 250
Physics · Dynamics
Launch a water rocket and predict its range
Build a bottle rocket and find the water volume and angle that give the longest flight.
- Intermediate
- 2–7 days
- 250–500
Physics · Optics
Measure the refractive index of water with a laser pointer
Trace a laser beam entering water at several angles and get the refractive index from Snell's law.
- Intermediate
- 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
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
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 · 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
Chemistry · Thermochemistry
Measure the heat released when salts dissolve
Dissolve different salts in water and classify each as heating or cooling the water.
- Intermediate
- 1–3 hours
- Under 250
Physics · Electromagnetism
Build a simple DC generator and light an LED
Wind a coil, spin magnets inside it and measure the voltage you generate.
- Intermediate
- 2–7 days
- 250–500
Chemistry · Analytical Chemistry
Estimate the calcium carbonate in eggshells
React eggshell with vinegar, measure the mass of carbon dioxide lost and calculate its purity.
- Intermediate
- 1 day
- Under 250
Biology · Botany
Investigate transpiration with a simple potometer
Build a potometer from tubing and measure how wind, light and humidity change water uptake.
- Intermediate
- 1 day
- Under 250
Chemistry · Medicinal Chemistry
Compare how well antacids neutralise acid
Find which antacid tablet neutralises the most acid per tablet and per rupee.
- Intermediate
- 1 day
- 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
Biology · Molecular Biology
Investigate the effect of temperature on enzyme activity
Measure how fast potato catalase breaks down hydrogen peroxide at different temperatures.
- Intermediate
- 1 day
- Under 250
Biology + Environmental Science
Test how fertiliser runoff affects algae growth
Add different amounts of fertiliser to jars of pond water and track how green they turn.
- Intermediate
- 1–2 weeks
- Under 250
Chemistry · Food Chemistry
Compare the energy in different foods by burning them
Burn nuts and snacks under a can of water and estimate the energy per gram of each.
- Intermediate
- 1 day
- Under 250
Earth Science · Seismology
Build a seismograph and record vibrations
Make a pen-and-weight seismograph that draws a trace when the table shakes.
- Intermediate
- 2–7 days
- Under 250
Physics · Optics
Measure the wavelength of a laser with a ruler
Reflect a laser at grazing angle off a steel ruler and get its wavelength from the diffraction spots.
- Intermediate
- 1–3 hours
- Under 250
Physics · Waves
Investigate standing waves on a string
Drive a stretched string with a small speaker and find how frequency depends on tension.
- Intermediate
- 1 day
- 250–500
Physics · Fluid Mechanics
Measure surface tension by counting drops
Use the drop-weight method to compare the surface tension of water, soapy water and oil.
- Intermediate
- 1 day
- Under 250
Physics · Oscillations
Study damping with a pendulum in air and water
Film a pendulum losing amplitude in air and in water and test whether the decay is exponential.
- Intermediate
- 1 day
- Under 250
Chemistry · Electrochemistry
Electrolyse water and collect the gases
Split water with a 9 V battery and show that hydrogen and oxygen form in a 2:1 ratio.
- Intermediate
- 1 day
- Under 250
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