Fourth Grade Science Experiments (Page 149)

Effect of Different Materials on a Magnetic Field

Science Fair Project Idea

Scientific Method

You've seen that a magnet's attractive force can cause a small object (like a paper clip) to "jump" to the magnet. So a magnetic field can act through the air, but what about other materials? Here's an experiment you can do to find out. You'll need a strong bar magnet, a stack of books, a paper clip, some thread and tape. Place the bar magnet underneath the top book in your stack, so that it sticks out. Tie a piece of thread (as long as the stack of books is high) to a paper clip. You… Read more

Effect of Temperature on Elasticity of Rubber Bands

Science Fair Project Idea

Scientific Method

How much force can a rubber band withstand before breaking? Do rubber bands that stretch longer take more or less force to break? How does the elasticity of a rubber band change with temperature? Use a spring scale to measure the applied force, and a meter stick or ruler to measure the change in length. Recording with a video camera (or possibly two) can help you to capture the values at the moment before the rubber band breaks. You can change the temperature of the rubber bands using… Read more

Egg Science Projects for K-12 Students

Blog Post

If there are eggs around the house for Easter, there are plenty of opportunities for exciting student science exploration. Try these projects and activities at home or at school. From physics to chemistry to materials science and engineering, eggs are full of science potential—no yolk joke! K-12 STEM: Science Projects About Eggs: Projects or Activities for Home or School. Hands-on STEM with Science Buddies. www.sciencebuddies.org Eggy Student… Read more

Encryption

Science Fair Project Idea

Scientific Method

Want to send coded messages to your friends? Can you write a simple letter-substitution encryption program in Python or JavaScript? How easy is it to break the simple code? Can you write a second program that "cracks" the letter-substitution code? Investigate other encryption schemes. What types of encryption are least vulnerable to attack? Read more

Energy Is Blowing in the Wind

Science Fair Project Idea

Scientific Method

Have you ever watched how trees sway and bend in a strong wind? Have you ever thought about all the homes that could be powered with forces from the wind? In this project you'll discover, through trees, good places in your community for generating wind power. Read more

Experiment with Factors that Affect Roundup® Weed Killer

Science Fair Project Idea

Scientific Method

Farmers are constantly battling various types of weeds that compete with the crops they are trying to grow. One of the tools they use to combat unwanted plants is a chemical called glyphosate. Glyphosate is the active ingredient in Roundup, a widely used weed killer. In this plant biology science fair project, you will explore the factors that affect the activity of glyphosate. Read more

Explore Biodiversity Using a Homemade Bug Vacuum!

STEM Activity

1

2

3

4

5

6 reviews

It might seem impossible to estimate how many different bugs live in a nearby field, or how many types of birds live in a forest, but wildlife biologists often have to try to determine the number of different species in a given habitat. This plays an important role in helping us understand how healthy the environment is. In this activity, you will get to take on the role of a wildlife biologist by examining the biodiversity of bugs and other small invertebrates (such as spiders, centipedes,… Read more

Explore Diabetes with Student STEM Projects

Blog Post

November is National Diabetes Awareness Month. Students interested in science related to diabetes can learn more with hands-on science projects and activities. Exploring Science Questions Related to Diabetes When faced with a science project or science fair project assignment, students who have Type 1 Diabetes, or have a family member of friend with diabetes, often immediately think about exploring a science question related to diabetes. Diabetes… Read more

Explore Magnification with a Drop of Water: Weekly Science Spotlight

Blog Post

What happens when you look through water at something below it? Does the object (or image) appear larger? Does it appear smaller? How much larger or smaller? It may depend on the shape of the water. Viewing something through a drop of water may make the object or image appear larger. Viewing through a layer of water in a container like a cup, on the other hand, may have a different effect because the curvature of the water is different. (The size of the drop of water may also make a… Read more

Explore Nanotechnology with Paper: Weekly Science Activity

Blog Post

In this week's spotlight: a materials science activity that gives families a hands-on look at nanotechnology. Materials coming out of nanotechnology research are often lighter and stronger than traditional materials. Nanotechnology scientists are working with matter at the nanoscale, which means they are working with individual atoms and molecules. By altering the structure and arrangement of particles, scientists are creating and discovering new materials that have exciting new… Read more

Fourth Grade Science Experiments (top 2,000 results)

Explore Our Science Videos