COLUMBIA, S.C. (WIS) - While spending time at the beach, you’ve probably heard the phrase high tide or low tide, and how those change with time each day.
Even though the change in tides takes time, they’re impressive in some places and barely noticeable in others. To find the main influence on tides, we look nearly 239,000 miles away at the Moon!
The gravitational pull of the Moon quite literally pulls Earth’s water in its direction. This pull of water results in high tide, but it doesn’t necessarily mean the opposite side of the Earth is then at low tide.
There are differences in gravity all over Earth’s surface, which result in an overall tidal force. That’s why there are two high and low tides per day as Earth makes one rotation. Whichever side is closest to the Moon will still be th