Here's why:
* Gravitational Pull: Both the Moon and the Sun exert a gravitational pull on Earth's oceans. When they are aligned, their gravitational forces combine, leading to a stronger pull on the water.
* High Tides: This combined pull creates exceptionally high high tides, known as spring tides.
* Low Tides: Similarly, the low tides during spring tides are also lower than usual.
The term "spring tide" might be confusing, as it has nothing to do with the season. It comes from the idea that the tides "spring" up higher during these times.