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What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

This science fair project idea investigates how color affects temperature.

This science fair project idea determines what household items are good conductors of electricity.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Boys might wrinkle their noses at the thought of gardening, but we guarantee they'll like this activity! Make a recycled terrarium full of bug-eating plants.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project idea experiments with spinning color wheels and optical illusions.

Construct batteries that make electricity from fruits with this fun science fair project.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This simple experiment serves as an introduction to the greenhouse effect.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Check out this cool science fair project on identifying rocks and minerals for kids.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.