Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

This science fair project idea lets you can create your own Faraday Cage!

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

This science fair project idea teaches Gauss' law and its implications and calculates and comprehends the flow of electrical charges in a Faraday Cage.

This science fair project idea increases the space efficiency of living areas and encourages economic improvements via new real estate ideas.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This science fair project idea lets you build your own wind tunnel and tests different models of paper airplane.

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!