Can be used to explain something.

Contains enough information that it can completely explain a phenomenon. 

There is clarity in the organization of content and use of space. 

Appropriate use of space, no overlapping lines, solid lines, attention to detail.

Uniform Circular Motion

While manipulating one variable and controlling the other two, use observations to produce an explanation of circular and orbital motion.

Complete the statement for each variable—
As the ___ increases, the acceleration ___ and the net force ___.

Manipulate the eccentricity of an orbit. Activate the vectors for force and velocity to aid in describing the motion. 

Set the eccentricity to four quantities. Describe the shape of an ellipse for each eccentricity, and the velocity over the course of one complete orbital period.