Third Grade Science Experiments (Page 127)

Pop Goes the Geyser!

Science Fair Project Idea

Scientific Method

Our home, Earth, is a living planet. Earthquakes and volcanic eruptions are proof that the geological forces that shaped our planet and created the land masses are ongoing. An amazing example of geologic activity that is less damaging is a geyser. In this geology science fair project, you will build a model geyser and determine how depth of the source affects how the water is ejected. By the end of this project, you will know a lot more about geysers and understand that a geyser is much more… Read more

Powering a Raft with Surface Tension: Weekly Science Activity

Blog Post

In this week's spotlight: a physics family science experiment that investigates the dynamics of surface tension. Surface tension may keep your soda from spilling over the cup when you fill it a bit too full, but can surface tension also be used to propel something? In this science activity, students build a small, lightweight raft and experiment to see how surface tension—and some dish soap—can help move it across the surface of water. Build a Bathtub Toy Raft Powered by… Read more

Program a Maze with Paper

STEM Activity

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64 reviews

You probably use computer programs every day. Every time you use the internet, play a video game, or us a smartphone, you are using computer programs. Do you want to learn a little bit about computer programming, without the need to actually use a computer? In this fun activity, you will write a “program” – a set directions for a volunteer to find their way through a maze. Can you help them find their way through without crashing? Read more

Racing Drones: Does Practice Make You Faster?

Science Fair Project Idea

Scientific Method

Have you ever flown a drone? Did you find it easy the first time you tried? In this project, you will fly a drone through an obstacle course and measure how practice changes your performance. Will practice help you finish the course in less time? Try it out! Read more

Racing to Win That Checkered Flag: How Do Gases Help?

Science Fair Project Idea

Scientific Method

Watching professional racing-car drivers compete can be thrilling. The high speeds that racing cars can reach — up to 200 miles per hour (mph) and more! — put some unique demands on the vehicles. For example, to withstand high temperatures, the tires must be inflated with nitrogen gas, instead of air as with normal car tires. This enables the drivers to have better control over steering their cars as they race around the track. In this sports science project, you will inflate… Read more

Radiant Radish Seeds

Science Fair Project Idea

Scientific Method

We all know that plants need sunlight and water to grow big and tall. But did you know that inside seeds are baby plants, and that the fragile baby plant inside the seed needs to be protected? If you've ever had a sunburn, you also know that the sun gives off harmful radiation and heat. How much radiation and heat can a seed handle? Find out using some radish seeds, an oven, and your microwave! Read more

Ring of Fire 1: What Volcanoes Tell Us About Plate Tectonics

Science Fair Project Idea

Scientific Method

The Ring of Fire is a region of volcanic and earthquake activity that surrounds the Pacific Ocean. In this project you can explore the connection between plate tectonics and volcanic activity by mapping historical data. Read more

Rooftop Gardens: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

Science Buddies Hands-On Projects: Science and Engineering for School and for Home In this week's spotlight: a pair of environmental engineering science projects for a hands-on look at the benefits of taking a rooftop approach to going and growing green. Can rooftop gardens help you keep your house cooler and lower your energy bill? Explore with a student science Project Idea or a hands-on family science activity: Rooftop Gardens: Are They a Cool Idea? (full Science… Read more

Rubbing Up Against Static Electricity

STEM Activity

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Have you ever wondered why rubbing a balloon or a blanket—or even a winter hat—on your head makes your hair stand up? The effect is due to static electricity, but how is the static electricity made, and why does it make your hair stand on end? Static electricity is the buildup of electrical charge in an object. Sometimes static electricity can suddenly discharge, such as when a bolt of lightning flashes through the sky. Other times, static electricity can cause objects to cling… Read more

Runoff and Fertilizer Use

Science Fair Project Idea

Scientific Method

Many people routinely use fertilizer for crops, gardens, and lawns. What people don't know is that each time they apply fertilizer, the fertilizer seeps through the soil into the water table. This can eventually lead to the contamination of a local water source, like a stream, pond, lake, bay, or ocean. This is an especially big problem for agricultural practices that frequently use large amounts of fertilizer on fields that are connected by irrigation channels. The run-off of fertilizer… Read more

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