# All Science Fair Projects

## Science Fair Project Encyclopedia for Schools!

 Search    Browse    Forum  Coach    Links    Editor    Help    Tell-a-Friend    Encyclopedia    Dictionary

# Science Fair Project Encyclopedia

For information on any area of science that interests you,
enter a keyword (eg. scientific method, molecule, cloud, carbohydrate etc.).
Or else, you can start by choosing any of the categories below.

# Gravitational field

The gravitational field is a field that causes bodies with mass to attract each other. If a small test particle of mass m is placed in a gravitational field, it experiences a force F. The gravitational field, g, is then defined as:

$\mathbf g = \frac{\mathbf F}{m}$

The field has units of force divided by mass; in SI, this is $N \cdot kg^{-1}$.