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Topics > Physics > Forces and Motion

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How to build the best paper airplane in the world
How to build the best paper airplane in the world

Difficulty: Elementary school

How to explain Newton's third law of motion using a balloon-powered rocket car
In this activity, students construct a balloon-powered rocket car that rolls across the floor because air is forced to escape through a plastic

Difficulty: Elementary school

How to measure gravitational forced between masses
This page presents a "basement science" experiment which reveals the universality of gravitation by demonstrating the gravitational attraction between palpable objects on the human scale. The experiment deliberately uses only the crudest and most commonplace materials, permitting anybody who's so inclined to perform it. Einstein's 1915 theory of General Relativity explains gravitation as spacetime

Difficulty: High school

How to suspend a ball in a stream of air (The Bernoulli principle)
A ball stably levitated on an invisible stream of air is a dramatic sight. When you try to pull the ball out of the airstream, you can feel a force pulling it back in. You can alsofeel that the airstream is being deflected by the ball. This Snack shows one of the forces that give airplanes lift.

Difficulty: Elementary school

How to use Galileo's inclined plane experiment to demonstrate acceleration
Using equipment that we might now call simple or even rudimentary, Galileo revolutionized basic scientific principles which were posited by Aristotle and held firmly by scholars of the High Middle Ages and Renaissance. One of his most important experiments was the inclined plane experiment. Galileo used his inclined plane, a simple board with a groove down which he rolled a small metal ball, to ex

Difficulty: High school

What are anti-bubbles?
An Antibubble is similar to a bubble, but the roles of the water and the air are reversed. This experiment shows you the characteristics of an anti-bubble!

Difficulty: Middle school

What is the best way to configure shock absorbers?
The purpose of this experiment was to determine the effect of damping in a shock absorber when the piston has different numbers and different size of holes, but keeping the total area of the holes constant.

Difficulty: High school

What is the effect of arrow mass on its penetrating distance.
The purpose of this experiment was to determine the effect of arrow mass on its penetrating distance.

Difficulty: Elementary school

What is the mechanical advantage of using a ramp to raise objects?
Students will construct a ramp using LEGO elements. Students will collect data to compare the mechanical advantage to effort. Students will make generalizations that they can apply to determine the mechanical advantages. One of many really cool sceince fair projects to try!

Difficulty: Elementary school

What is the most efficient angle for windmill blades?
My first hypothesis is that the closer the blade is to 45 degrees the more electricity the windmill will produce.

Difficulty: Elementary school

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Kits for your science fair projects Science fair book Science kit search tool Bigpedia - online encyclopedia

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