4th Grade Engineering and Science Inquiry Resources : Page 7

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

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

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea explores whether white light can be separated into different colors.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Find out whether putting something on top of a plant will inhibit its growth.

This project investigates the affect of storage temperature on microwave popcorn.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This science fair project idea investigates if fats add to the flavor of food.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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