Earth’s axis tilt is the angle at which the planet spins compared to its orbit around the Sun. This tilt causes different parts of Earth to receive varying amounts of sunlight during the year, creating the seasons — spring, summer, fall, and winter.
A solstice occurs when one hemisphere is tilted most toward or away from the Sun, resulting in the longest and shortest days of the year. An equinox happens when day and night are nearly equal in length worldwide.
Tides are the regular rise and fall of ocean water, mainly caused by the Moon’s gravity and partly by the Sun’s gravity.
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