High School Science Experiments (Page 59)

Science Fair Project Idea

Scientific Method

Earth's atmosphere, the ocean of air that blankets the planet, is mostly nitrogen and oxygen, with small amounts of other gases. How much oxygen is present in air at sea level? In air high up in the Appalachians or Rockies? Atop Mount Everest? How much oxygen is present in the air you breathe? Here's a project that shows you how to measure the percentage of oxygen in an air sample. Read more

Measuring Your Taste Threshold

Science Fair Project Idea

Scientific Method

Have you ever been to a buffet and found yourself surrounded by a wide variety of taste sensations? People are generally able to discern five basic tastes: sweet, umami (also known as savory), salty, sour, and bitter. How sensitive is a person's tongue for these basic tastes? Is it easier to detect some flavors at low concentrations compared to others? In this human biology science project, you will find out by exploring your taste thresholds for sweetness, saltiness, and sourness. Get ready to… Read more

Mini Golf Physics

STEM Activity

1

2

3

4

5

16 reviews

Have you ever played mini golf? It might seem like just a game, but there is a lot of science behind it! Learn about the physics behind a rolling, bouncing mini golf ball and design your own mini golf course in this fun science activity. Read more

Mini Trebuchet Science

Blog Post

When you build your own mini trebuchet from craft materials, launching projectiles becomes a source of scientific exploration! Explore physics and engineering while you learn more about this medieval tool. In this week's family-friendly physics activity, kids bring a medieval siege tool to life when they build their own mini trebuchet. While similar in concept to a catapult—they both launch projectiles—a trebuchet differs from a catapult… Read more

Mixing Your Own Marshmallows: Finding the Right Ratio of Sugar to Corn Syrup

Science Fair Project Idea

Scientific Method

Whether you are sitting around a campfire, or drinking hot chocolate after a day in the snow, nothing says fun quite like a marshmallow! Even its name is soft and spongy! In this cooking and food science fair project, you will make your own marshmallows several different ways, and discover the three special ingredients that give marshmallows their unique texture. You will also find out why they melt so quickly. Explore the science of these sticky, spongy sweets! Read more

Model the Solar System with Marbles

STEM Activity

1

2

3

4

5

60 reviews

What would it be like if you could see the planets of our solar system orbiting the Sun all at once? What about the moons orbiting the planets? Learn how to make your own simple demonstration of gravity and planetary orbits in this fun activity. Read more

Monitor Plant Health with a Color Sensor

Science Fair Project Idea

Engineering Design Process

Do you have a garden or houseplants? What about living on or a near a farm? How often do you check your plants' leaves for discoloration? What if you could build a robot to check for you, and warn you if your plants are getting sick? In this project you will learn to use a color sensor to identify different colors on leaves, which can give you a warning about problems like pests, diseases, or nutrient deficiency. Get ready to automate your gardening! Read more

Monitor Your Plants with a Soil Moisture Sensor

Science Fair Project Idea

Scientific Method

Do you or your family have a lawn, garden, or potted plants that you water regularly? Irrigation—or the artificial application of water to plants and landscaping—accounts for over two-thirds of the world's freshwater consumption (U.S. Geological Survey, 2016)! While that total includes farms, in the United States landscape irrigation still accounts for almost one-third of residential water use. As much as half of that water is wasted due to inefficient watering methods (WaterSense,… Read more

Mouthwatering Candy Melt

STEM Activity

1

2

3

4

5

71 reviews

What is your favorite type of candy? Have you ever wondered why you like this candy so much? Is it its taste, how it feels in your mouth, or both? Cooks and food scientists study how substances dissolve or melt to create a unique and pleasant sensation in the mouth and optimize the release of flavor. Would you like to know how your favorite candy works? In this science activity, you will study two types of candy and discover what makes them so enjoyable. Read more

Musical Bottles

STEM Activity

1

2

3

4

5

20 reviews

Have you ever blown across a bottle's top and made a pleasant, resonant sound? If so, have you wondered how that note is made exactly? The exact note you hear depends on the resonant frequency of the air in the bottle. Musical instruments like ocarinas operate based on a similar principle. In this science activity, you will use bottles to investigate how the volume of the air in the bottle affects the pitch of the note that it makes. Read more

High School Science Experiments (top 2,000 results)

Explore Our Science Videos