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Topics > Physics > Forces and Motion

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How can we make metal float?
A steel nail sinks. But a steel ship floats. How can that be?

Difficulty: Elementary school

How do magnetic fields affect the rate of flow of water?
This science fair project investigates how the magnetic field emanating from a permanent magnet will affect the rate of flow of water through a narrow passage. The experiment will be done using salt solution and tap water, with a magnetic field as well as without a magnetic field.

Difficulty: High school

How does an elevator work?
This experiment shows you how elevators work through a series of pulleys.

Difficulty: Elementary school

How does the bounciness of a golf ball affect the distance that it will travel?
This science fair project was performed to find out if relatively bouncier golf balls are able to travel further than less bouncy ones. The tests were done using 3 brands of golf balls.

Difficulty: Middle school

How does the shape and mass of an object affect its velocity when sinking through water?
The purpose of this experiment was to determine how much the hydrodynamic shape and mass of an object would affect its velocity when sinking through water.

Difficulty: Elementary school

How does the type of surface of an inclined plane affect how far and fast an object rolls?
I want to do a scientific research project to see what effect of the surface of an inclined plane has on how far an object rolls. My hypothesis states that a matchbox car that rolls down an inclined plane covered with wax paper will roll farther than when rolled down an inclined plane covered with sandpaper or aluminum foil.

Difficulty: Elementary school

How the Bernoulli's principle works for different shapes
This experiment was performed to investigate how effective Bernoulli's principle is in lifting objects of different shapes.

Difficulty: High school

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

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