This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea researches the effects of acid rain on plant growth.

Find out whether packaged seeds actually do expire in this new science fair project idea.

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

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

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea investigates whether plants can survive being frozen.

In this project, the affects of vitamin E are observed on a rose petal.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea explores whether talking to a plant will help it grow.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea determines if the color of light affects the growth of plants.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

Test whether plants can grow without sunlight and water.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.