Difference between revisions of "Tides"
Jump to navigation
Jump to search
(As the sun rises in the east and the stars come out at night, we are confident that the ocean waters will regularly rise and fall along our shores.) |
(→See also: red links) |
||
| (11 intermediate revisions by 10 users not shown) | |||
| Line 1: | Line 1: | ||
| − | '''Tides''' are | + | [[Image:Tides.jpg|right|400px]] |
| + | '''Tides''' are the rise and fall of water levels in larger bodies of water. Every day, there are two "high tides," when the water levels rise, and two "low tides," when water levels fall. | ||
| − | Tides on the [[Earth]] result from the [[Moon]]'s gravity, which is just enough stronger on the near side of the earth to attract ocean water more than on the far side. Fishermen, sailors and other observers have long noted that the twice-daily cycle of high tides and low tides | + | Tides are one of the most reliable phenomena in the world.<ref>http://oceanservice.noaa.gov/education/kits/tides/tides01_intro.html</ref> Tides on the [[Earth]] result from the [[Moon]]'s gravity, which is just enough stronger on the near side of the earth to attract ocean water more than on the far side. Fishermen, sailors and other observers have long noted that the twice-daily cycle of high tides and low tides corresponds to the Earth's rotation under the moon. |
| − | == | + | When the moon is collinear with the sun and the Earth, then tides are stronger; when it forms an angle with the Earth and the sun, tides are weaker. |
| − | + | ||
| − | + | ==References== | |
| + | {{reflist}} | ||
| + | |||
| + | |||
| + | [[Category:Earth Sciences]] | ||
Latest revision as of 16:57, July 26, 2016
Tides are the rise and fall of water levels in larger bodies of water. Every day, there are two "high tides," when the water levels rise, and two "low tides," when water levels fall.
Tides are one of the most reliable phenomena in the world.[1] Tides on the Earth result from the Moon's gravity, which is just enough stronger on the near side of the earth to attract ocean water more than on the far side. Fishermen, sailors and other observers have long noted that the twice-daily cycle of high tides and low tides corresponds to the Earth's rotation under the moon.
When the moon is collinear with the sun and the Earth, then tides are stronger; when it forms an angle with the Earth and the sun, tides are weaker.