Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Learn how acid-base catalysis affects enzymes and enzymatic reactions in this science project.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

This project examines how temperature affects the volume of gas in balloons.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Determine the effect of reading aloud on memory skills. Prepare a list of randomly chosen words, ask volunteers to recall as many as possible from the list.

Students identify variables that affect the duration of high school romances and analyze data to predict the success or failure of ongoing relationships.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

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

Test whether plants can grow without sunlight and water.

This science fair project idea examines which type of insulation holds in the most heat.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Explore the neural and mental mechanisms at play in mental imagery.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

The objective of this science project is to determine the length of time for different seeds to germinate.

The goal of this project is to create an exciting topographical map out of dough.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.