is a full moon global and why does it make the tide really high.
In: Physics
Full moons are global. There is a very slight difference because people on different sides of the earth see it from a slightly different angle, but you can’t really notice without taking careful measurements with a telescope.
Tides are about 2/3 due to the moon and 1/3 due to the sun, so when the moon and sun work together the tides are more extreme (the highs are higher and the lows are lower). Mostly there are two tides a day, 12h25m apart, so the sun and moon are working together when they’re in opposite parts of the sky (full moon) and also when they’re close together in the sky (new moon). When they’re 90° apart (first and third quarter), they’re acting against each other and you get less extreme tides.
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