
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 …
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 …
Cause and Effect: Tides - Education
2023年10月19日 · The regular rise and fall of the ocean’s waters are known as tides. Along coasts, the water slowly rises up over the shore and then slowly falls back again. A man rakes …
Tide | Definition, Causes, Types, & Facts | Britannica
2025年1月11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 …
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 …
What Causes Tides? | NOAA SciJinks – All About Weather
2025年2月20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 …
Tide - Wikipedia
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth …
Tides - National Oceanic and Atmospheric Administration
2025年2月25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 …
Tides - National Oceanic and Atmospheric Administration
2023年3月28日 · Tides are another type of wave motion – a change in the ocean water level that typically reaches a high and low twice a day, about six hours apart (called a semi-diurnal tide). …
Tide - Education | National Geographic Society
2023年10月19日 · The alternating advance and retreat of seawater along a coastline is called a tide. High tide is when water advances to its furthest extent onto the shoreline. Low tide is …