High School Science Experiments (Page 107)

Oil Spills

Science Fair Project Idea

Scientific Method

No one can deny the devastating consequences of an oil spill on the local wildlife. Oil affects all levels of the ecosystem, from plants to fish and birds. What happens to water plants if you add motor oil to their pot? What is the effect of motor oil on the health of a goldfish, or water insects? What happens to the barbs of a bird feather if they are dipped in oil? Can you test different types of environmentally-friendly detergents for cleaning the bird feathers? Can you test different… Read more

One Bad Apple Spoils the Whole Bunch: An Experiment on the Plant Hormone Ethylene

Science Fair Project Idea

Scientific Method

We have all heard the old saying, "One bad apple spoils the whole bunch." Due to the production of the plant hormone ethylene during the ripening process, this saying proves true! This experiment will investigate the role of ethylene in the process of fruit ripening. Read more

Origami

Science Fair Project Idea

Scientific Method

How do you turn a 2-dimensional piece of paper into a 3-dimensional work of art? Origami, the classical art of Japanese paper folding, is loaded with mathematical themes and concepts. What are the common folds in origami, and how do they combine to create 3-dimensional structure? Can you classify different types of origami into classes based upon the types of folds they use? Can you show Kawasaki's Theorem, that if you add up the angle measurements of every other angle around a point, the sum… Read more

Ow, My Tummy Hurts! The Biology and Chemistry of Gas Relief

Science Fair Project Idea

Scientific Method

Have you ever wondered why bubbles form when you mix soap and water? Is it possible to mix soap and water without making bubbles? Medical doctors actually study similar questions when they treat patients who have too much gas trapped in their digestive system, which can cause pain and bloating and also signal a serious medical problem. Some drugs, including one called simethicone, can help relieve extra gas in the digestive system. In this science project you will find out how simethicone… Read more

Paper Bridge for Pennies

Science Fair Project Idea

Scientific Method

Using just a single sheet of paper (8.5 x 11 inches) and up to five paper clips, can you build a bridge that will span 20 cm and support the weight of 100 pennies? The area beneath the span must be free (so that boats can pass beneath it). To test your bridge, place two books 20 cm apart, and set the bridge on the books, spanning the gap. Do not fasten the bridge to the book (nor to any other support). Does your bridge hold as much weight as you expected it would? If your bridge fails… Read more

Paper Circuits Science Projects

Blog Post

Use these free STEM projects and activities to learn about circuits and make interactive paper circuits with K-12 students. Teach About Circuits! With "paper circuits," students can learn about circuits and design and build their first circuits on a piece of paper. Paper circuits are great for introducing students to circuits because the materials are simple. With copper tape, an LED, and a coin cell battery, students can assemble a circuit, learn… Read more

Paper Rocket Aerodynamics

Blog Post

Make paper rockets you can launch by blowing through a straw and experiment to find out how changing the design can change how the rockets fly with this family STEM activity. Making a paper rocket that you can launch by blowing through a straw is an easy hands-on activity sure to engage paper airplane folders and rocket enthusiasts alike. You can easily turn this paper-based pastime into a STEM activity by exploring the design of the paper rocket. What… Read more

Paper Squawker

STEM Activity

1

2

3

4

5

7 reviews

Did you know that not all animals use their ears to ‘hear’ sounds? Snakes, for example, perceive sound waves through their jaw bones! And many insects perceive sound waves through their antennae. While these methods of detecting sound might be different, they all respond to the same thing that our ears do, which is sound waves in the environment. In this activity you will generate some impressive sound waves from very simple materials, and observe how these sound waves are… Read more

Particles in the Mist: See Radioactive Particles Decay with Your Own Cloud Chamber!

Science Fair Project Idea

Scientific Method

Are you fascinated by radioactivity and the emission of particles caused by the disintegration of an atom? This science project enables you to observe safely a spectacular display of radioactive decay. Following the instructions in the Procedure, you will be able to isolate a safe radioactive source and build a cloud chamber to watch the radioactive decay. Then you will use your cloud chamber to discover if a plastic lid can shield you from this type of radioactive decay particles. Read more

Password hacker

STEM Activity

1

2

3

4

5

10 reviews

Do you have your own email or social media accounts? If so, you probably use a password to log into them. How did you pick your password? Is it something that might be easy for someone else to guess, like the name of your pet? This fun activity will teach you about password security and how to pick a stronger password. Read more

High School Science Experiments (top 2,000 results)

Explore Our Science Videos