Spring and neap tides in 3D

Move through the lunar month and the time of day.

Learn tides properly

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Questions students ask

What causes spring tides?

The Sun, Earth and Moon are in line (new and full moon), so their tidal pulls add up.

Why are there two high tides a day?

There is a bulge facing the Moon and one on the opposite side, and the Earth spins through both.

Free notes on tides

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