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Topics > Physics > Forces and Motion

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Can air pressure alone cause an egg to be pushed into a bottle?
Students will determine how and why an egg is able to go into a bottle due to changes in air pressure.

Difficulty: Middle school

Can quarters and feathers fall at the same speed?
In a famous demonstration, Galileo supposedly dropped a heavy weight and a light weight from the top of the Leaning Tower of Pisa to show that both weights fall at the same acceleration. Actually, this rule is true only if there is no air resistance. This demonstration lets you repeat Galileo's experiment in a vacuum.

Difficulty: Elementary school

Compare how different types of balls bounce and determine what are the factors that contribute to this difference
To begin your own investigation of the bounciness of balls, you'll need several different kinds of balls to compare. I'd suggest a golf ball, a tennis ball, a baseball, and a basketball for starters. Hold a ball at a measured height above a solid surface-- one meter is a good height. Now drop the ball and notice how high it bounces.

Difficulty: Middle school

Demonstrate the use of a lever and the impact of lever length
Demonstrate the use of a lever and the impact of lever length.

Difficulty: Elementary school

Determine which type of laminated beam is the strongest
The purpose of this project is to determine which laminated beam is the strongest.

Difficulty: Middle school

Experiments with buoyant forces
Here are some experiments for comparing the buoyancy and density of differents cans of soda

Difficulty: Elementary school

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

Difficulty: Elementary school

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

Difficulty: Elementary 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

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