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Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Determine which metal has the highest rate of conductivity.

Determine whether the application of Febreeze will lower the bacterial count.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Cookie catastrophe! In this project you will determine if different types of cookie sheets can cause cookies to bake differently.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.