Science Buddies
Science Buddies: Decisions, Decisions: Judging a Book by Its Cover?
This project challenges you to think like a politician (and a scientist.), and try to ascertain what factors are most important as individuals make their decision on how to vote. For example, is it what is being said, or who is saying it?
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Science Buddies: Do Dilutions of Disinfectants Affect Bacterial Resistance?
This is a project that illustrates the process of natural selection in action. You'll need access to a laboratory for working with the bacterial cultures used in this project.
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Science Buddies: The End Zone: Measuring Antimicrobial Effectiveness
Antimicrobial agents are chemicals that are used against bacteria. There are many such agents available. Because there are many different situations where bacterial control is important, no antimicrobial agent is effective in all...
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Science Buddies: Minimizing Bacteria in the Thawing and Cooking of Meat
Here's a practical project that sheds light on safe practices in the kitchen. Use this information to determine which method of defrosting meat is safest and which method of cooking kills the most bacteria.
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Science Buddies: How the Strength of a Magnet Varies With Temperature
Physicists sometimes study matter under extreme conditions. For example, think of the emptiness of interstellar space vs. the unimaginable crush of pressure at the center of a neutron star, or an object dipped in liquid nitrogen vs. the...
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Science Buddies: Teachers Rule!
Most students like their teachers. However, they may not always say so. Peer pressure may keep a student from expressing how they really feel. In this experiment you will find out if more students like their teacher in younger grades...
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Science Buddies: Effects of Food Preservatives on the Growth of Microorganisms
The problem of protecting food from spoilage has been with us since prehistoric times. The solutions to this problem have changed with advances in technology and knowledge about what causes food to spoil. This project uses liquid...
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Science Buddies: What Duration of Ultraviolet Exposure Kills Bacteria?
Ultraviolet light can damage DNA molecules. If a cell's DNA repair mechanisms can't keep up with the damage, mutations are the result. As harmful mutations accumulate, the cell eventually dies. How much ultraviolet light is too much for...
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Science Buddies: Distance and Constant Acceleration
This project is an experiment in classical physics. You'll be following in Galileo's footsteps, and investigating Newton's laws of motion, using a metronome as your timing device. This resource will help you get a firm understanding of...
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Science Buddies: Distance and Speed of Rolling Objects
This project is an experiment in classical physics. You'll be following in Galileo's footsteps, and investigating Newton's laws of motion, but you'll be taking advantage of modern video recording technology to make your measurements. The...
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Science Buddies: Measuring Sugar Content of a Liquid With a Laser Pointer
Here's a project that shows you how to use a laser pointer and some knowledge of physics to figure out the concentration of sugar dissolved in a liquid.
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Science Buddies: Frequency Dependent Sound Absorption
Want to start a garage band, but Mom or Dad won't let you because it will make too much noise? This is a good project for someone who is interested in acoustics and likes to build things. The objective of this project is to determine if...
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Science Buddies: How Do the Seasons Change in Each Hemisphere?
On a rainy day, do you ever wonder what the weather is like on the other side of the planet? Different regions around the globe can have very different seasonal weather patterns. In this experiment, you can test if these seasonal...
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Science Buddies: How Does a Wind Meter Work?
On a windy day it is hard to keep your hat on. The power of the wind can even be strong enough to power large wind turbines to make electricity. In this experiment, find out how you can make your own instrument to measure the speed and...
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Science Buddies: Calculating the Circumference of the Earth
In this project, you will estimate the circumference of the earth, using a method developed about 2,200 years ago, by Eratosthenes, a Greek mathematician and the librarian of the great library at Alexandria, in Egypt.
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Science Buddies: Effect of Friction on Objects in Motion
The funny thing about friction is that you couldn't get anywhere without it, yet it still acts to slow you down as you're getting there. Here is an easy project to measure the effects of friction.
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Science Buddies: Effect of Trebuchet Arm Length or Counterweight Mass on Project
A trebuchet is a catapult that uses a counterweight to supply the energy for throwing. They were used in the Middle Ages for attacking castle walls. In this project, you build your own model trebuchet and investigate how design changes...
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Science Buddies: Fractography: The Way Things Break
When something goes wrong, do you like to try to figure out why? Engineers do this all the time. They even have a fancy name for it: failure analysis. Understanding how different materials break is an important part of failure analysis....
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Science Buddies: How Many Numbers Can You Remember?
Most people don't even remember phone numbers anymore, and instead program them into their phones. There is a limit to the number of numbers, or digits, that most people can remember. Try this experiment to test your digit span, the...
Science Buddies
Science Buddies: How Does Ratio of Sand to Cement Affect Strength of Concrete?
Concrete is one of those things that most of us don't think about much, yet we use it every day. We walk on concrete sidewalks, drive on concrete roads, and live and work in buildings with foundations made of concrete. It is a durable...
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Science Buddies: Underground Water Flow and Darcy's Law
This project shows you how to build a simple model system to simulate underground water flow. Underground water flow is important for understanding replenishment of underground aquifers, migration of underground contaminant plumes, and...
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Science Buddies: Similar Triangles: Using Parallax to Measure Distance
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? In this project, you'll learn one way of measuring the distance without...
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Science Buddies: Measuring Vibrational Frequency With Light
Strike a key on the piano, and you hear the string vibrating. Just about any object vibrates when it's knocked, but how much and how fast? This project helps you find out. You'll build a simple light-sensing circuit for measuring the...
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Science Buddies: How Fast Do Seismic Waves Travel?
Here's a geology project that uses historical seismograph data that you can collect from the comfort of your own computer. You'll use a web interface to a network of seismometers run by the Northern California Earthquake Data Center, at...
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