Ideas for Science Fair Projects

Models and DemonstrationsHow a bicycle worksHow a generator or motor worksSimple machinesLeversPulleysOpen and closed circuitsHow a switch worksHow a flashlight worksHow light reflectsMixing colorsHow magnets workAn electromagnetFrictionHow thermometers workHeat and airDoes air have weight?Why things floatWhy the wind blowsWhat makes hail?What is ground water?Inside our earth (model)The earth’s surface features (model)Features of the sea floor (model)Our solar system (model)Galaxies and our Milky Way (model)Optical illusionsHow the ear works (model)How the eye works (model)The ant (model)How seeds travelDo plants give off water?Tree ringsHow much salt does it take to float an egg?What kind of juice cleans pennies best?Do the roots of a plant always grow?What kids of things do magnets attract?Can plants grow without soil?Do different types of apples have the same number of seeds?Do bigger seeds produce bigger plants?Does holding a mirror in front of a fish change what the fish does?Will bananas brown faster on the counter or in the refrigerator?Does anyone have the same fingerprints?Can plants grow from leaves?With which type of battery do toys run longest?