2nd - 8th Grade Engineering and Science Inquiry Activities : Page 3

Discover how and which salt melts ice the quickest.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

This project explores whether there is an effect on people, including heart rate and self-expressed mood, when they are exposed to different types of music.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Start your toy engines -- this is going to be a fast and friction-filled race!

This project examines whether people's taste perception is influenced by what they see.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

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

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

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

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

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

In this design challenge, your child will make a bottle rocket using typical household items.

This experiment will evaluate if chewing gum affects students' test performance.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Plants and light seem to be good buddies, but how far does the friendship really go?