Engineering: Build a $6.95 Seltzer-Powered Rocket and make it fly higher it with hot water, and so on.Engineering: Are wood composites stronger than solid wood?.How does adding salt affect the evaporation rate? Chemistry: Weigh water as it evaporates.Chemistry: Use $9.95 goldenrod paper to classify household products as acidic or basic.Chemistry: Separate colors in marker pens or colored drinks with chromatography.Chemistry: How does the dissolving rate of Alka-Seltzer depend on warmth (and other experiments)?.Chemistry: Grow colorful Rock Candy Crystals for $9.95.Chemistry: Find the pH of household liquids with “ Cabbage Juice” for $9.95.Chemistry: Can you paint a picture using only Native American pigments? Here’s another site.Botany: Will plants grow better in plain water or in water leached many times through rich soil? Here's an easier project of the same type using various types of water.Botany: Why and how do trees differ? How many types are in your area? Use a camera.Botany: What percent of various fruits is water? Here is another good site.Botany: Why do leaves change color in fall? (Use many plants.).Botany: What factors cause orange juice to lose Vitamin C? Here’s another way to make the test.Botany: Is the growth rate of radish seeds affected by temperature?.Botany: How does the size of a seed determine its ideal planting depth?.Botany: How close can another plant grow to an ornamental sweet potato (which poisons the soil)?.Botany: Grow plants in a rock tumbler or clinostat to simulate zero gravity.Botany: Find a tree stump and analyze its rings.Botany: Does the soil from anthills act as a fertilizer? Do plants grow better next to them?.Botany: Do earthworms promote plant growth? Buy worms here.Biology: Switch birdseed color in this easy $10.00 feeder and see which color birds prefer.Biology: Study Butterflies with a Live Butterfly Garden for $19.99.Biology: Is it true that moths prefer an ultraviolet light bulb to bulbs of other colors?.
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Biology: Buy a Tickle Me Plant from Edmund Scientific for $4.95 and explain its weird activities.Behavior: Which state collects the most lottery money per resident? How can you explain that data?.
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Behavior: Which gender is more likely to run a stop sign? Contact us for a full report.Behavior: Which gender do the police arrest more frequently for speeding?.Reading “red” in blue ink is slower than “red” in red ink. Behavior: Investigate the Stroop Effect.Behavior: How does age affect your reflexes, in particular, the time to dribble a ping-pong ball?.Behavior: Does aging reduce your night vision? If you wish to read an in-depth article go here.
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