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

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

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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

Make this easy recipe for Halloween, featuring white chocolate and pretzels, for a crispy, creepy treat!

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

Making candles from old candles is easy. Recycle old candle stubs to make a "new" candle, and teach your child about recycling at the same time!

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

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

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

The objective of this experiment is to evaluate the effects of acid rain on plants.