All Science Fair Projects

Over 1000 FREE Science Fair Project Ideas!

Acids, bases, and sea shells
Seashells are the hard, outer coverings that mollusks produce, in order to protect themselves from predators; it also serves as a form of shelter form the elements. Seashells come in a wide range of shapes, sizes, and colors; however, they all are created from the same material - calcium carbonate. In this science fair project, you will investigate how seashells, and other objects containing calci
Can lettuce seeds be used as a bioassay medium for testing toxicity?
The idea behind a reference toxicity test is that the test organism, in this case lettuce seeds, will respond in a predictable manner to varying concentrations of a particular chemical compound. At some threshold concentration, all of the test organisms will be killed (or in this case, none of the lettuce seeds will sprout). In solutions that are more dilute, some level of inhibition will occur in
Difficulty: High school
Can water be split into oxygen and hydrogen?
If an electrical current is passed through water between electrodes (the positive and minus poles of a battery), the water is split into its two parts: oxygen and hydrogen. This process is called electrolysis and is used in industry in many ways, such as making metals like aluminum. If one of the electrodes is a metal, it will become covered or plated with any metal in the solution.
Difficulty: Middle school
Comparing the burning speed of scented and unscented candles
This experiment was performed to compare how quickly a scented and an unscented candle will burn. The tests were done by comparing the length that the candles will burn in 30 minutes - using unscented, rose scented and apple scented candles.
Difficulty: Middle school
Convection and salinity: How does salinity affect the movement of water?
Convection is the phenomena characterized by the movement of molecules in gases and liquids. Heat causes molecules to be active, while cooler temperatures result in less activity. Convection can be observed in volcanoes, in the ocean, in cooking, in heating your home and even in decorative lava lamps. In this science fair project you will observe how the addition of salt to water effects convecti
Corrosion of different metals
This science fair project was conducted to find out the corrosiveness of different types of metals. The science project experiment involved using copper, aluminum, iron and zinc plates.
Difficulty: High school
Do white candles burn faster than colored candles?
My topic was about burning candles. I wanted to find out what color candle would burn the fastest. My hypothesis stated that, if I burned five candles, one red, one white, one yellow, one purple, and one blue, then the white one would burn the fastest.
Difficulty: Elementary school
Dry Ice Experiments
Dry ice is frozen Carbon Dioxide, or CO2, which is a gas under standard temperature and pressure conditions. The atmosphere contains about .035% of this gas. CO2 is a greenhouse gas, which means it absorbs light at infrared wavelengths. An increase in the concentration of this gas would, some scientists believe, cause an increase in the atmosphere's average temperature. The high concentration of C
Difficulty: Middle school
Effect of temperature on glow sticks
This science fair project was conducted to determine how temperature can affect the length of time a glow stick remains lit. The experiment was done by placing a glow stick in water with a temperature of 5°C, 15°C, 25°C, 35°C and 45°C.
Difficulty: Middle school
Effect of temperature on solubility
This experiment was done to find out how temperature affects the solubility of various substances in water. The tests were done using salt, sugar and sodium bicarbonate at different temperatures.
Difficulty: Middle school
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