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Science Buddies

Science Buddies: Spread the Soap, Not the Germs

For Students 3rd - 5th
Washing your hands is the best way to prevent the spread of germs. But germs can be tricky; they find nooks and crannies to hide in, so it takes good hand-washing technique to get rid of them. This science project investigates which...
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Science Buddies

Science Buddies: Do Oranges Lose or Gain Vitamin C After Being Picked?

For Students 9th - 10th
Are oranges highest in vitamin C when they are fresh from the tree (or, in a pinch, the grocery shelf)? In this project you'll learn how to measure the amount of vitamin C in a solution using an iodine titration method.
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Science Buddies

Science Buddies: Solar Speedway

For Students 6th - 8th
Solar power is hot these days. Gleaming, black solar panels soak up rays on more and more rooftops of homes and businesses providing a clean, alternative source of heat and electricity. You might guess that different times of the day...
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Science Buddies

Science Buddies: Now You're Cooking!

For Students 6th - 8th
Here is a project that uses direct solar power, gathering the sun's rays for heating and sterilizing water or cooking. It's a low-cost technology that seems to have everything going for it. Use this project to find out if it works, and...
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Science Buddies

Science Buddies: Blowing Bottletops: Making Music With Glass Bottles

For Students 6th - 8th
This is a musical project about the resonance of closed-end air columns. Organ pipes, flutes, and brass instruments are examples of musical instruments of this type. In this project, you'll learn how the pitch of the note produced...
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Science Buddies

Science Buddies: Singing Wine Glasses

For Students 6th - 8th
Making a glass sing is not always as easy as it looks. This project explains the science behind the interesting hobby. You will be asked how the amount of fluid within a glass affects its pitch.
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Science Buddies

Science Buddies: How to Make a Guitar Sing

For Students 9th - 10th
This is a great project for musicians interested in the physics of stringed instruments. If you have ever played an acoustic guitar, you may have noticed that picking a single string can make one or more of the other (unpicked) strings...
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Science Buddies

Science Buddies: What Material Makes the Most Resonant Soundboard?

For Students 9th - 10th
If you like music and musical instruments, this project might resonate with you. You will investigate materials that could be used to build acoustic musical instruments. You can then use a music box mechanism and a sound level meter to...
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Science Buddies

Science Buddies: Artificial Intelligence Teaching a Computer to Play Tic Tac Toe

For Students 9th - 10th
This is a more challenging JavaScript project. You will have to figure out a way to translate game strategy into a computer algorithm. Directions will show you how to create a working Tic-Tac-Toe board on a webpage. Just by showing the...
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Science Buddies

Science Buddies: Bomb's Away! A Ping Pong Catapult

For Students 3rd - 8th
With this project you'll send ping pong balls flying through the air with a rubber-band powered catapult. This catapult makes it easy to reproduce the launch angle, and to measure the amount of force applied to the projectile. Armed with...
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Science Buddies: Image Compression vs. Image Quality: Finding the Best Tradeoff

For Students 6th - 8th
In this project you'll learn about how digital image files are encoded, and compressed. You will also measure the quality of compressed and uncompressed images, which will give you important insights into the tradeoffs between file size...
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Science Buddies

Science Buddies: Levitating Magnets: Floating Isn't Just for Magicians

For Students 3rd - 5th
If you ever seen a magician float an object in the air, you might think that levitation is just a magic trick, but the truth is you can use an invisible physical force to levitate a magnet. Try this simple, week-long science project to...
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Science Buddies: Slime Chemistry

For Students 3rd - 5th
Have you ever wondered how fun toys like Silly Putty, Gak, and Slime are made? These products are so much fun because of the properties of polymers, which make them delightfully bouncy, stretchy, sticky, moldable, breakable, hard, soft,...
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Science Buddies

Science Buddies: Back and Forth to Go Forward: A Snake on Wheels?

For Students 9th - 10th
Have you ever ridden on a Roller Racer or Plasma Car? These are ride-on toys that you move ahead by moving the steering mechanism back and forth. You've probably seen skateboarders "slaloming" on level ground to keep rolling, it's...
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Science Buddies

Science Buddies: Does Crossed Hand/eye Dominance Affect Basketball Shooting %?

For Students 9th - 10th
Everyone's used to the idea that people are either right-handed or left-handed for particular tasks. That is, one hand is preferred (or dominant) over the other for a particular task. Did you know that people also have a dominant eye?...
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Science Buddies

Science Buddies: How Does the Intensity of Light Change With Distance?

For Students 9th - 10th
How far would you have to travel so that the light of the full sun would provide "daylight" no brighter than twilight on Earth? This project describes a method to verify the inverse square law: how light, sound, electrical signals, and...
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Science Buddies

Science Buddies: How Do Baseball Stadium Dimensions Affect Batting Statistics?

For Students 9th - 10th
Here's a fun project that combines baseball and math. Major League baseball is played in ballparks that have their own individual quirks when it comes to the exact layout of the field. Fenway Park in Boston has the famous "Green Monster"...
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Science Buddies

Science Buddies: The Physics of Cheating in Baseball

For Students 9th - 10th
This week-long project asks you to examine the density of certain materials, such as "corked" baseball bats and regular baseball bats, and whether they can cause a ball to travel different distances.
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Science Buddies

Science Buddies: Frequency of Outcomes in a Small Number of Trials

For Students 3rd - 8th
People often draw conclusions from a small number of observations, but how easy is it to draw the wrong conclusion? Here is a simple project that shows the importance of making enough observations before making a prediction.
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Science Buddies

Science Buddies: Extracting Onion Dna

For Students 6th - 8th
In this project, you'll learn how to isolate DNA from onion cells, separating it from other cellular components in a manner that still preserves its structure and sequence. In the end, you'll have enough DNA to see with the unaided eye,...
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Science Buddies

Science Buddies: Yeast Reproduction in Sugar Substitutes

For Students 9th - 10th
There's nothing quite like the smell of fresh-baked bread to make your mouth water. As any baker can tell you, you can't bake bread without yeast. This project makes clever use of bread dough to measure yeast reproduction three different...
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Science Buddies

Science Buddies: Earthworm Castings: Soil for Young Garden Plants

For Students 9th - 10th
Everybody knows that worms are good for the soil, but not everybody knows why. Here's a project that investigates just one of the ways earthworms improve the earth.
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Science Buddies

Science Buddies: Cryopreservation: Freezing Plant Tissues

For Students 6th - 8th
Cryopreservation-storing seeds in ultra-cold liquid nitrogen-is one method for maintaining plant genetic stocks in seed banks. The purpose of this project is to observe the characteristics and outcomes of cryogenically frozen seedlings...
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Science Buddies

Science Buddies: Planting Size vs. Depth

For Students 6th - 8th
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...

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