Elementary School Science Experiments (Page 166)

Puppy Proportions: Comparing Growth Spurts and Weight Gain in Your Dog's Early Months

Science Fair Project Idea

Scientific Method

Planning on getting a new puppy soon? Why not use some of your play time with puppy to study growth rates and puppy development? You can easily chart a young puppy's weekly weight and growth over several months to compare how quickly body dimensions and bone lengths change. While this project may take some time, it's well worth the effort. You might be amazed at the dramatic growth of your "canine kid," and what other project combines science with as much fun, or a more adorable subject? Read more

Puppy Science: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

In this week's spotlight: a mammalian biology project and family activity that encourages families to talk about and explore why puppies and other animals huddle together for warmth. Does cuddling up really increase warmth? Put it to the test in this hands-on science experiment! Huddle & Cuddle: How Puppies Keep Warm (full Science Buddies Project Idea) Snuggly Science: How Puppies Keep Warm (science activity at Scientific American) Read more

Racing Marbles to Measure Viscosity

Blog Post

Have you ever noticed that some liquids are more difficult than others to squeeze from a container? Honey is a great example. Depending on its temperature, it may be especially slow to flow from the bottle. (If you warm it up, it may flow more quickly!) While it may seem like the quality of the honey you are noticing is its "thickness" or "thinness," another way to talk about what you are seeing is to talk about its viscosity. In this week's chemistry-themed family science… Read more

Rad Radishes: Effects of Irradiation on Seed Germination

Science Fair Project Idea

Scientific Method

DNA is the "instruction manual" for the successful growth of a living thing, from a single cell to a mature adult. When the DNA of an organism is somehow damaged, it can have an impact on the organism's development over time. In this plant science fair project, you will track how irradiation (exposure to radiation) of radish seeds affects germination (sprouting of a seedling from a seed). Read more

Recording on a Wire

Science Fair Project Idea

Scientific Method

Today magnetic recording is used in audio and video cassette recorders, and computer disk drives. Did you know that you can also use an electromagnet to record and play back from a steel wire? In fact, this is how magnetic recording got started. This project shows you how to build a simple wire recorder. Read more

Ring of Fire 2: What Earthquakes Tell Us About Plate Tectonics

Science Fair Project Idea

Scientific Method

Today it is widely accepted that the Earth's crust consists of a series of huge plates that slowly move. The low parts of the plates are beneath the world's oceans, and the high parts of the plates are landmasses. New plate material is generated at deep sea ocean ridges in a process called sea-floor spreading. Material from plates is also recycled at trenches, where dense, oceanic crust dives back (subducts) underneath an adjacent plate towards the upper mantle. Figure 1 shows a map of the… Read more

Riprap: It's Not Hip Hop But Erosion Stop

Science Fair Project Idea

Scientific Method

Have you ever been to the Grand Canyon and seen what water can do over millions of years? When you turn on the faucet, do you see water come out, or mud? In this experiment you'll find out how engineers help prevent erosion, which keeps dirt out of our water. Read more

Rock On! Recording Digital Data with Magnets

Science Fair Project Idea

Scientific Method

This is a straightforward project that shows you how data can be digitized and stored on magnetic recording media. You'll learn how alpha-numeric characters are digitized, and you'll use bar magnets to represent the individual data "bits." You'll also learn about how much information can be stored in a small space (recording density), and how magnetic data can be erased. Read more

Rocket Science: Weekly Science Project Idea/Home Science Activity Spotlight

Blog Post

In this week's spotlight: a pair of projects that fit right in with U.S. 4th of July celebrations and let you get hands-on with "rocket" science at any time of the year. What happens when you combine vinegar and baking soda? A chemical reaction! If you contain the reaction in a small space like a film canister, you can get a high-flying blast from the combination—your own mini rocket. But how much of each ingredient do you need? Experiment with the ratio of vinegar and baking soda… Read more

Rubber Band STEM (Awesome Summer Science Experiments)

Blog Post

Check in each week at Science Buddies this summer for our Awesome Summer Science Experiments series! Each week, we'll highlight a few activities for awesome science and engineering kids can do at home. We've got a whole summer of fun STEM themes lined up for kids of all ages — for free. This week: awesome summer science experiments with rubber bands! Awesome Rubber Band STEM Rubber bands are fun to stretch and even fun to fling across the room.… Read more

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