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Science Fair Project Idea
Our metabolism changes as we get older, a sad fact of life that we cannot change. Old age affects our bodies in many ways. Changes in musculature, bone strength, energy, diet and breathing are some of the many ways we change as we age. You might notice that people often get out of breath when they are older and doing a physical activity. Why do some people feel out of breath, while others do not? Does this change correlate with age? Could this reflect a difference in lung capacity between… Read more
HumBio_p003
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Time Required Average (6-10 days)
Material Availability Bromothymol blue is a specialty chemical which can be ordered from an [# ProjectGuide Name="Advanced.ApprovedSuppliers" Value="HtmlAnchor" HtmlText="online vendor" #].
Cost Low ($20 - $50)
Safety Adult supervision is recommended. If using bromothymol blue, be careful not to ingest it. Any volunteer who feels light-headed after exhaling should stop immediately and not repeat the experiment.
Science Fair Project Idea
Many organisms have ways of orienting toward or away from an environmental stimulus. Some of these behaviors are instinctive, meaning they are behaviors with built in instructions that do not need to be learned. The instinctive response to a stimulus is called a taxis, and there are several types of cues: electricity (galvanotaxis), gravity (geotaxis), light (phototaxis), heat (thermotaxis), touch (thigmotaxis) or a chemical (chemotaxis). You can design experiments to test whether organisms… Read more
Zoo_p043
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project can be done with insects you catch in your own backyard or order from [# ProjectGuide Name="Advanced.ApprovedSuppliers" Value="HtmlAnchor" HtmlText="online vendors" #] such as [# Link Name="Advanced.ApprovedSuppliers.2" Value="HtmlAnchor" HtmlText="Carolina Biological Supply Company" #]
Cost Very Low (under $20)
Safety If you choose to try this science project with small animals (rather than with insects), use caution when handling the animals and always have an adult present. The use of small animals may require [# ProjectGuide Name="Advanced.ScientificReviewCommitteeSRC" Value="HtmlAnchor" HtmlText="SRC approval" #].
Science Fair Project Idea
Animals have different levels of activity depending upon their habitat, metabolism and behavior. Diurnal animals are more active during the day. Nocturnal animals are more active at night. Being diurnal or nocturnal may have different advantages for different animals. For example, desert animals tend to be nocturnal so they can stay cool and escape the desert heat present during the day. What types of diurnal and nocturnal animals are common in your area? You can set out a small trap to… Read more
Zoo_p041
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety If you choose to try trapping small animals, adult assistance will be necessary. Avoid touching wild animals. Seek immediate medical attention if bitten by an animal.
Science Fair Project Idea
Germination is the process by which a seed emerges from the seed coat. Many different variables can effect the process of germination. Try to sprout seeds from different species of plant to see if different species vary in germination time. Are weeds faster germinators than vegetables? Try measuring seeds and then germinating them to see if big seeds sprout at a different rate than small seeds. Try sprouting seeds in different environments to test the effect of different environmental… Read more
PlantBio_p028
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Time Required Very Long (1+ months)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Use caution when using a blade to cut open seeds. Adult supervision is recommended.
Science Fair Project Idea
Plant stems grow through a process of elongation due to cell divisions within the stem. Does the entire length of the stem elongate evenly? Or do certain regions along the plant stem grow more or less than others? Regions that are involved in active growth are called vegetative. You can conduct an experiment to show which regions of a bean seedling are involved in vegetative growth. Use a marker to mark one inch sections along the main stem of a young bean seedling. Number the regions 1-6… Read more
PlantBio_p023
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Soil may look like a bunch of dirt, but good quality soil is actually a complex mixture of dirt, nutrients, microorganisms, insects and worms. What type of benefit do these microorganisms offer a growing plant? You can test this by baking soil in the oven to sterilize and kill the microorganisms. Do plants grown in sterile soil do better than plants in unsterilized soil? What about adding worms to one plant, but not to the other. Will the plant with worms grow better? Some insects are bad… Read more
PlantBio_p031
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Time Required Very Long (1+ months)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision is required when using the oven. Use caution when handling and disposing of mold. Treat molds according to the same safety rules as outlined for bacteria in the [# ProjectGuide Name="Advanced.MicroorganismsSafetyGuide" Value="HtmlAnchor" HtmlShortTitle="true" #].
Science Fair Project Idea
Leaves grow in a different pattern than stems and shoots. They do not elongate along one axis, but instead spread out over time. Do all regions of the leaf grow equally? You can use markings on different regions of a growing leaf to see if the whole surface grows, or if growth is focused in a particular region, like the veins or edges of the leaf. If you look along a leafy stem, you may notice that leaves at different positions along the stem are different sizes. You can do an experiment to… Read more
PlantBio_p024
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Chlorophyll is a natural pigment found in green plants. It is the primary pigment that absorbs light energy from the sun for photosynthesis. This energy is then used by the plant to synthesize glucose from carbon dioxide and water. Chlorophyll in the leaves of plants can be extracted and separated using chromatography. A good source of chlorophyll for an extraction is a dark green leafy vegetable like spinach. Rub a fresh spinach leaf on the bottom of a strip of filter paper. You can get a… Read more
PlantBio_p020
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Time Required Average (6-10 days)
Prerequisites None
Material Availability The page on [# ProjectGuide Name="Advanced.PaperChromatographyResources" Value="HtmlAnchor" #] lists the best papers and solvents for chromatography. The paper needs to be specially ordered and is available from the [# Link Name="PlantBio_p035.1" Value="HtmlAnchor" #].
Cost Low ($20 - $50)
Safety The solvents, like acetone or alcohol, for paper chromatography should be used in well-ventilated areas. Adult supervision is recommended.
Science Fair Project Idea
Animals respond to chemical cues in different ways. If an animal turns away from a chemical cue, then that chemical is a repellent. If an animal turns toward a chemical cue, then that chemical is an attractant. Attractants and repellents can be airborne chemicals, chemicals found in food, or chemicals that diffuse through water. One example of an airborne chemical is a pheromone, a chemical signal that is released by one individual to attract another. Moths release pheromones to attract… Read more
Zoo_p042
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
All animals need to respond to changes in their immediate environment. The sensory structures of animals are each made to respond to distinct types of sensory stimuli: touch, taste, sound, light and smell. How are these stimuli received? Different animals have different strategies for receiving stimuli and develop specialized structures for doing so. Antennae, ears, noses, tongues, eyes, eye spots, hairs and bristles are all examples of sensory structures used by different animals to sense… Read more
Zoo_p040
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Avoid applying too much pressure and harming an animal when performing the touch test.
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