LEVEL ONE
Plants
In what type of soil do plants grow best?
Do plants know which end is up?
How much light do plants need?
Can plants get sunburned?
What color of light in the light spectrum causes green beans to grow the best?
Does temperature affect the growth of plants?
Can plants grow from the leaves?
Do bigger seeds produce bigger plants?
Does a plant grow bigger if watered with milk or water?
Food
Compare the amount of starch in assorted vegetables.
Compare the freezing time for ice cream using ice versus ice and salt.
Will bananas brown faster on the counter or in the refrigerator?
Do different kinds of apples have the same number of seeds?
Which brand of popcorn pops the most kernels?
Which brand of popcorn pops the fastest?
Does sunlight affect the taste of milk?
Animals
Do ants like cheese or sugar better?
What foods do mealyworms prefer?
What seeds do birds like best?
Do mint leaves repel ants?
Which travels faster a snail or a worm?
On which surface can a snail move faster, dirt or cement?
How far does a snail travel in one minute?
How much can a Caterpillar eat in one day?
What color of flowers attract hummingbirds best?
What colors attract moths and other insects at night?
LEVEL TWO
Plants
What happens to mushrooms grown with no light, or too much light? No moisture, or too much moisture? No fresh air?
Do roots of a plant always grow downward?
Compare different methods of cooking a potato and the sensory differences.
Does adding salt to a plant's water affect its health? How much salt can a plant tolerate before it dies?
Can plants grow without soil?
What type of soil is in my school yard?
How does the spray from mister bottle affect plant growth?
Does music affect plant growth?
Does a green plant add oxygen to its environment?
Compare organic pesticides to commercial pesticides.
What percentage of cornseeds in a package will germinate?
Does a plant need some darkness to grow?
What are the effects of chlorine on plant growth?
Do weed killers affect house plants?
How do the moon phases affect plant germination?
How fast do roots grow?
What is the effect of chlorinated water on plant growth?
How does the number of seeds produced by different plants compare?
Will frozen seeds sprout?
Will plants grow better in soil or water?
What can be done to increase the decomposing rate of plants?
Do plants grow bigger in soil or water?
How much weight can a growing plant lift?
Does it matter in which direction seeds are planted?
Do living plants give off moisture?
Can mushrooms be grown hydroponically?
Which plants and vegetables make the best dye?
Does the type of water affect the growth of plants?
Do living plants give off moisture?
Do living plants give off oxygen?
Does the amount of light affect the growth of plants?
Does sugar prolong the life of cut flowers?
Food
Do microwaved foods cool faster than baked or stovetop foods?
Which wrapping would keep sliced apples the longest in a refrigerator - foil, wax paper, plastic wrap or baggies?
What plant foods contain starch?
How much of an orange is water?
How much of an apple is water?
How does temperature affect the water uptake in celery plants?
Animals
Do different species of birds prefer different types of seeds?
Can earthworms be used to turn kitchen waste into compost?
What products do beef cattle provide? Which body parts are not used?
How do day-old domestic chicks behave?
At what rate do pets drink water?
Do mint plants repel insects?
LEVEL THREE
Plants
What factors affect the rate of fruit ripening?
Will antacids help soil polluted by acid rain?
What is the percentage of water in various fruits and vegetables?
How can agricultural pests be controlled without the use of insecticides?
Does temperature affect how well an insecticide will work?
How does centrifugal force affect the germination of corn seeds?
How does light direction affect plant growth?
Will vitamins affect the growth of a plant?
What is the effect of detergent on bean seeds?
Under what color light do plants grow best?
In what kind of material (sand, clay, etc.) do seeds grow best?
What is the effect of fats and cholesterol on plants?
Can a mushroom block continue to produce new flushes of mushrooms over a longer total life span if the block is lightly fertilized? Does an organic fertilizer (e.g. something like milk, gelatin, etc.) work better, or an inorganic one (something like Miracle Grow™)?
Do different types of soil hold different amounts of water?
Will adding bleach to the water of a plant reduce fungus growth?
Does the color of light spectrum affect plant growth?
What conservation practice works best to control erosion?
Food
Observe the influence of different cooking methods and different pHs on the appearance, flavor and texture of vegetables.
Does sunlight affect the amount of vitamin C in orange juice?
What effect does cooking have on a food's nutritional value?
How do microwaves work to cook food?
Animals
Does playing music increase egg-laying in chickens? Ducks?
What effect does increased soil acidity have on earthworms?
How important are earthworms to soil formation and plant growth?
What kind of life can be found in one square meter of backyard soil?
How does a bird embryo grow in an egg?
Can mice distinguish color?
How do mealy worms respond to light?
How does an earthworm react to light and darkness?
Do different kinds of caterpillars eat different amounts of food?
Does temperature affect the flash rate of fireflies?
What is the effect of temperature on the activity of (mealy worms, crickets, etc.)?
Does a student's grade level affect his/her knowledge of endangered species?
How does earthworm population relate to soil type?
Other Science Fair Resources
Science Fair Projects
GEM Science Fair Projects
PlanetAg Science Fairs
Ultimate Science Fair Resource
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