High School Science Experiments (Page 164)

Similar Triangles: Using Parallax to Measure Distance

Science Fair Project Idea

Scientific Method

Want to stretch your imagination? One good way is to try to imagine how far it is to a distant star. How much farther away is it than the moon is from the earth? How much farther away than the earth is from the sun? How long would it take to get there? In this project, you'll learn one way of measuring the distance without leaving Earth. Read more

Simple Machines and Potato Holes

Blog Post

In this family STEM activity, kids are challenged to find the easiest way to drill holes in a raw potato. There is a "simple machine" key to this challenge! Simple Machine Power A raw potato can be pretty firm, and trying to punch or drill holes into it can be more difficult than you might expect. Science, however, holds the key to making it easy! In this week's family-friendly science activity, students experiment with pencils and straws to find the… Read more

Singing Science: Weekly Science Activity

Blog Post

Photo: Children's choir. In this week's spotlight: a music-themed science activity that guides families in an exploration of vocal ranges. What determines how high or how low you can sing? What does the length of your vocal chords have to do with your vocal range? Does age or gender have anything to do with the highest note you can hit? Put these questions to a singing test with a science experiment. Comparing Vocal Ranges: How High and Low Can You Go? (full Science Buddies… Read more

Size vs. Depth: The Relationship Between the Size of a Seed and Its Ideal Planting Depth

Science Fair Project Idea

Scientific Method

Plants have evolved many clever mechanisms to ensure that their seeds will wait for appropriate conditions before sprouting. Some may only germinate after a fire, others only after going through a cold spell. This project explores one important variable among many that determine the ideal conditions for seed germination. Read more

Skeleton Building

Science Fair Project Idea

Scientific Method

Do you like skeletons? One of the more interesting jobs at a natural history museum is the creation and care of the skeletons and bones. How do the curators clean and put together the skeletons? Many curators use the carrion beetle, Dermestes vulpinus, to quickly clean off the dead animal tissue from a corpse to reveal the skeleton. These insects do such a good job that sometimes the skeleton remains intact! Another method is to slow cook the carcass until the meat falls off. You can use… Read more

Skiing and Friction: How Does Ski Wax Affect the Sliding Friction of Skis?

Science Fair Project Idea

Scientific Method

You can model this with an ice cube sliding down a plank: how high do you need to lift the end of the plank before the ice cube starts to slide? Try this with one side plain wood and the flip side waxed wood (use paraffin wax, candle wax or ski wax). Make sure both sides are equally smooth to start with. Do at least three trials. More advanced: using what you know about the forces acting on the ice cube, derive equations to calculate the coefficient of friction for each case. Variation: chill… Read more

Skipping Science: An Experiment in Jump Rope Lengths

Science Fair Project Idea

Scientific Method

Did you know that the world record for the greatest number of jumps in a minute is more than 340? That's more than five jumps a second! How close do you think you can get to that number? If you are going to try to break the record, it might be important to figure out how jump rope length affects your success. Try your hand at this skipping science fair project and jump-start your chances for a jump rope record. If you have a smartphone available, you can use its accelerometer and a sensor app… Read more

Skunk Attack! Test Different Remedies to Remove Skunk Odor

Science Fair Project Idea

Scientific Method

Have you or one of your pets ever been sprayed by a skunk? Hopefully not, but if you have, you probably know that the smell can be very unpleasant and hard to get rid of. There are many "folk remedies" for getting rid of skunk scent, but if you ever do get sprayed by a skunk, how will you know which one to try? In this science project, you will test the ability of various mixtures to remove the bad scent from rags that have been contaminated with bottled skunk scent, and determine which one… Read more

Sliding and Friction: Weekly Science Activity

Blog Post

In this week's spotlight: a fun physics activity that turns exploring the relationship between friction and sliding into a cool hands-on exercise. With a rubber band and a stack of coins, families can slingshot the coins on various surfaces to see how the surface affects how the coins slide. This science activity may feel like a game, but there is great science to be observed, so grab a rubber band, make a finger-based slingshot, and let the coins slide! Effect of Friction on… Read more

Slinking Slinkies

Science Fair Project Idea

Scientific Method

Want to do a project with a toy your parents, or even grandparents, might have played with? Slinkies are fun toys that also make great physics and engineering projects. In this science project you will investigate how changing the angle of an inclined plane affects how the Slinky walks down it. What angle will enable the Slinky to go for the best walk? Read more

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