An illustration of the moon causing Earth's ocean tides. Shutterstock. When teachers explain ocean tides, they frequently describe how the moon's gravity pulls on Earth and all of its water.
Tides have caused a lot of trouble recently. During high tide periods, low-lying areas that border the ocean now flood way more often than they used to. Between 2000 and 2017, the average frequency of "high tide flooding" across the United States increased by 50 percent. Floods of this sort block ...
Tides are caused by the gravitational pull of the Sun and the Moon on the Earth's surface. While most people associate them specifically with the ocean, the entire planet is subject to tidal forces, as is the atmosphere, and in fact all celestial bodies are influenced by these forces. The large ...
The key to understanding how the tides work is understanding the relationship between the motion of our planet and the Moon and Sun. As the Earth spins on its own axis, ocean water is kept at equal levels around the planet by the Earth's gravity pulling inward and centrifugal force pushing outward.
When teachers explain ocean tides, they frequently describe how the Moon's gravity pulls on Earth and all of its water. This, they often say, leads to a gravitational imbalance, which stretches the ocean into two opposing bulges: one that's closest to the Moon (where the Moon's gravity is strongest); and one on the opposite side from the Moon (where its gravity is weakest).
Low tide at the same fishing port in Bay of Fundy, 1972. Schematic of the lunar portion of Earth's tides, showing (exaggerated) high tides at the sublunar point and its antipode for the hypothetical case of an ocean of constant depth without land. There would also be smaller, superimposed bulges on the sides facing toward and away from the Sun.
Most of us have heard of tides, and we generally know that they are what causes the water level at the beach to go up and down, but have you ever looked into the mechanics of how tides work? The cause of tides is actually quite interesting, and is the result of many factors interacting.
Tides are the rise and fall of the levels of the ocean. They are caused by the gravitational pull of the Sun and Moon as well as the rotation of the Earth. Cycles of a Tide Tides cycle as the Moon rotates around the Earth and as the position of the Sun changes.