What is a Tide?
A Tide is the daily rise and fall of sea level. The tide is caused by the Moon and Sun's gravity. The Sun only has half the effect on tides than the Moon, because the Sun is farther away.
Different kinds of Tides.
- Spring tides: During the full moon and new moon phases spring tides occur. This is when the Sun and Moon's gravitational effects combine and produce higher high tides and lower low tides. (left picture)
- Neap tides: A week after a spring tide, a neap tide occurs. During a neap tide the Sun, Moon, and Earth form a right angle. When this happens, the Sun's effect on tides reduces the Moon's effect. High tides are lower and low tides are higher. (right picture)