4th Grade Engineering and Science Inquiry Science Projects : Page 3

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

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

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

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Learn whether writing things down really makes things easier to remember.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

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.

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

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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.

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

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

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science fair project will help students learn about non-vascular plants, such as mosses.

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.