[00:00]	Midterm Sample Problems
[00:39]	Useful Formulas
[05:18]	Self-Review
[06:09]	The Terrestrial Planets
[06:31]	Terrestrial Planets
[10:23]	Earth
[13:56]	Moon
[15:21]	Mercury
[17:05]	Venus
[19:15]	Mars
[22:05]	What is a Planet?

Learning Objectives

1. Understand the form and the significance of the four critical phases of evolution for Terrestrial planets.

2. Comprehend what controls the severity of differentiation, cratering, flooding, and surface evolution on each planet.

3. Compare and contrast the surface and atmospheric evolution of Earth, Mercury, Venus, Mars, and the Moon.

4. Consider the five suggested definitions for a planet, and discriminate between them.