The Free Science Fair
Projects Network

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Alternate Methods of Testing Seed Viability For grades 7 thru 11 Category: Botany Hypothesis: Hydrogen peroxide will loosen the seed coat more efficiently than the hydrochloric acid and the isopropyl alcohol, and that it will cause the least amount of damage to the seed. Primary Materials Used: Petri Dishes Kentucky Bluegrass Seeds, Hydrogen Peroxide, Hydrochloric Acid, Isopropyl Alcohol, Triphenyl Tetrazlium, Microscope, Blotter Paper, Seed Strainer, Seed Piercer, White Labels, Warm Oven Click Here for more details about the "Alternate Methods of Testing Seed Viability" science fair project.

Do Magnets Affect Radish Plant Growth? For grades 4 thru 8 Category: Botany Hypothesis: The radish plants near a magnet will grow shorter and lean towards the magnet. The radish plants that are not near a magnet will grow straight and taller. Primary Materials Used: Magnets, Grow Light, Pots, Radish Seeds, Water Dropper, Potting soil, Timer Click Here for more details about the "Do Magnets Affect Radish Plant Growth?" science fair project.

Does Dog Saliva Kill Bacteria? For grades 5 thru 9 Category: Chemistry Hypothesis: Dog Saliva will be effective at killing bacteria. Primary Materials Used: Saliva from Three Dogs, Staphylococcus Epidermis Bacteria, Petri Dishes, Filter Paper, Nutrient Agar, Sterile Tweezers, Sterile Scissors, Sterile Cotton Swabs, Sterile Eyedroppers, Four Cups, Paper Towels, Protective Gloves, Bleach Click Here for more details about the "Does Dog Saliva Kill Bacteria?" science fair project.

Electric Charge in Fruits and Vegetables For grades 3 thru 8 Category: Physics Hypothesis: The potato will have the greatest charge. Primary Materials Used: Various Fruits and Vegetables, Multimeter Click Here for more details about the "Electric Charge in Fruits and Vegetables" science fair project.

Heat and Evaporation For grades 2 thru 7 Category: Earth Science Hypothesis: The light bulb with the highest wattage will cause water to evaporate the fastest. Primary Materials Used: Light Bulbs, Light Sockets, Cardboard Boxes, Duct Tape, Camera Click Here for more details about the "Heat and Evaporation" science fair project.

How Do Different Cations and pH Affect Bean Growth For grades 4 thru 8 Category: Botany Hypothesis: The higher the pH, the poorer the beans would grow, therefore the beans would grow worst in the sodium solution and best in the calcium solution. Primary Materials Used: Pinto and Great Northern Beans, 4-Quart Plastic Tubs, PVC Pipe, Plastic Needlepoint Cloth, Distilled Water, Sprayer, Sodium Hydroxide, Potassium Hydroxide, Calcium Hydroxide, pH Paper, Disposable Gloves, Aquarium Gravel, Scale Click Here for more details about the "How Do Different Cations and pH Affect Bean Growth" science fair project.

How Does Incubation Temperature Affect the Sex Ratio of Fruit Flies? For grades 7 thru 10 Category: Zoology Hypothesis: Female fruit flies will outsurvive the male fruit flies because they have to go through much more harsh labor than the males. Primary Materials Used: Fruit Flies, Incubator, Vials, Fly Anesthetizer, Magnifying Glass, Tweezers, Thermometer Click Here for more details about the "How Does Incubation Temperature Affect the Sex Ratio of Fruit Flies?" science fair project.

Musical Rat Mazes For grades 4 thru 8 Category: Zoology Hypothesis: Rats will learn a maze the best with no music. Primary Materials Used: Rats, Three Different Mazes, Three Types of Music, Stopwatch, CD Player, Jelly Bread Click Here for more details about the "Musical Rat Mazes" science fair project.

SPLAT! Forming Craters and Predicting Their Size For grades 3 thru 7 Category: Space and Astronomy Hypothesis: The size of a crater formed by an object's impact will be greater when the object is bigger and faster. The size of the crater will be predictable after enough data is collected. Primary Materials Used: Plaster of Paris, Cake Pans, Ladders, Clamps, Kite String, Triple Beam Balance, Wood, Tape Measure Click Here for more details about the "SPLAT! Forming Craters and Predicting Their Size" science fair project.

The Effect of Slope Angle on the Amount of Eroded Material For grades 4 thru 8 Category: Earth Science Hypothesis: The steeper the slope angle the more material will be eroded. Primary Materials Used: Erosion Box, Soil, Triple Beam Balance, Timer, Bucket, Drainer, Standard Lego Blocks, Scientific Calculator, Water, Pitchers, Coffee Filters Click Here for more details about the "The Effect of Slope Angle on the Amount of Eroded Material" science fair project.