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Amazing Gravity
ExperimentBy: Erick Galindo FloresStory Jumper
Publishing

Introduction                                            .3
Problem                                                  .4
Hypothesis                                              .5
Materials                                                 .6
Procedure                                                .7
Conclusion                                           .10
The Science Behind the Fun                 .12
Fun Facts                                              .14
Applications                                         .18
Glossary                                               .19
Citations                                               .20
Icon Chart                                             .21Table of Contents

Universal Concept
Forces are interrelated.

Big Ideas

Introduction
Hi, this book is going to show you
how to do an awesome experiment
using gravity, and will give you a lot
of information.

ProblemCan you balance 2 forks on the edge
of a water glass using only a
toothpick? I chose this topic because I
want to learn about
gravity.

HypothesisIt's very probable that the forks fall.

Hmmmm
mmmm...

Materials- 2 forks                       "I used these
                                     materials in the
                                     experiment".- 1 glass- 1 toothpick

Procedure1. Join the two forks.

62. Insert the toothpick between the
two forks.

3. Carefully search a point of balance

in the rim of the glass. Just slide the
toothpick back and forth until you
find a balancing point.

ConclusionIf you find the point of balance, the10forks will balance over the toothpick.

1st place!

The Science Behind the Fun The secret to this science experiment
is understanding how gravity and
stability work. The center of gravity
of any object is the point were you can
balance the object as if all the masses
were gathered at this point.

So, it's the point at which the object
balances from left to right,front and
back, and top to bottom.

Rules

In the balancing fork trick, the center
of gravity is just below the spot where
the toothpick rests on the edge of the
glass. If you look closely at your fork
trick, you'll notice that the fork handles
are positioned below the toothpick. This
puts the center of gravity directly below
the point where the toothpick is balanced
(called the pivot point).

Here is where it gets very confusing: the
center of gravity, where the forks
balance front and back, left and right,
top to bottom, is actually hanging in
mid-air. (mid-air examples)