<span>It is the Sun lighting different parts of the Moon at different times and varying amounts of the Moon's lit surface being visible from Earth.</span>
Mostly its the tectonic plates that shift under us that causes earthquakes, how they shift changes the damage the earthquake can cause so tectonic plates unless u want the mythological one which is some earth god scratching his back
If the sin 30° = 0.5, then the cos 60° = 0.5
I'd say counties because there are way more of them
