This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Find out whether putting something on top of a plant will inhibit its growth.

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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Challenge your learner to design and build a city of their own in this creative engineering activity.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.