Tide - Wikipedia
The water stops rising, reaching a local maximum called high tide. Sea level falls over several hours, revealing the intertidal zone; ebb tide. Oscillating currents produced by tides are known as tidal streams or tidal currents. The moment that the tidal current ceases is called slack water or slack tide. The tide then reverses direction and is ...
What Are Tides | How Do Tides Work? - Popular Mechanics
2019年9月25日 · There's an Earth tide as well, where the solid Earth changes its shape directly due to the pressures of the Sun and the Moon. But that's not as noticeable as what happens in the ocean. How Does...
What Causes Tides? | NOAA SciJinks – All About Weather
2024年12月5日 · High tides and low tides are caused by the moon. The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest …
What Causes Tides? High and Low Tides Explained
2023年9月8日 · High and low tides refer to the regular rise and fall of the ocean's waters. High tide occurs when water covers much of the shore after rising to its highest level. Low tide is when the water retreats to its lowest level, moving away from the shore.
Tides - NASA Science
2021年8月5日 · Twice a month, when the Earth, Sun, and Moon line up, their gravitational power combines to make exceptionally high tides, called spring tides, as well as very low tides where the water has been displaced. When the Sun is at a right angle to the Moon, moderate tides, called neap tides, result.
What are tides? - NOAA's National Ocean Service
2024年6月16日 · Tides are very long-period waves that move through the ocean in response to the forces exerted by the moon and sun. Tides originate in the ocean and progress toward the coastlines where they appear as the regular rise and fall of the sea surface.
Tides and Water Levels - NOAA's National Ocean Service
Basically, tides are very long-period waves that move through the oceans in response to the forces exerted by the moon and sun. Tides originate in the oceans and progress toward the coastlines where they appear as the regular rise and fall of the sea surface.
Tide - Education | National Geographic Society
2023年10月19日 · The gravitational pull of the moon and the rotational force of the Earth cause tides to rise and fall across the planet. The species living in coastal areas most affected by changing tides have unique ways of surviving.
Tide | Definition, Causes, Types, & Facts | Britannica
2024年12月2日 · Tide, any of the cyclic deformations of one astronomical body caused by the gravitational forces exerted by others. The most familiar are the periodic variations in sea level on Earth that correspond to changes in the relative positions of the Moon and the Sun.
Tides - National Oceanic and Atmospheric Administration
2016年6月20日 · The word "tides" is used to define the rise and fall in sea level resulting from the gravitational attraction of the moon and the sun. The result of this pull is a bulge in the ocean water almost in line with the position of the moon; one bulge toward the moon and one on the opposite side of the earth, away from the moon.