12.2 Be able to identify the operation of each of the following interactions in the formation of planets and moons:
- a. the interaction between tidal gravitational and elastic forces to determine whether a body is broken apart (Roche Limit)
- b. the interaction between attractive gravitational and elastic forces in determining a body’s spherical or irregular shape
- c. the interaction between gravitational and thermal factors in determining the presence of an atmosphere

Find out about the operation of these interactions: