The Earth-Moon system
03: The Earth-Moon system
Between "what phase is it?" and "why does the sea move?" sits the physical system itself: two bodies, locked together, orbiting a point that is inside one of them.
Lessons
| # | Lesson | What you get |
|---|---|---|
| 1 | Scale | The distance, actually to scale |
| 2 | Tidal locking | Why we only ever see one face |
| 3 | The orbit is not a circle | Perigee, apogee, and "supermoons" |
Prerequisites
Why this sits here
Module 02 treated the Moon as a light source at an angle. Module 04 needs it as a mass at a distance. This module is the bridge.