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Ocean Tides
Affected by the gravitational pull of the moon and sun, sea levels rise and fall on a daily basis. Ask questions here about high tide, low tide, spring tide and neap tide.
1,277 Questions
Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
Tidewater refers to the region along the coast that is affected by the ebb and flow of ocean tides. It is characterized by low-lying lands frequently inundated by saltwater, making it suitable for activities like shipping, fishing, and agriculture. The term is commonly used in the eastern United States, particularly in states along the Atlantic seaboard.
When do high and low tides occur?
High tides occur when the gravitational pull of the moon and sun align with the Earth, causing water to bulge towards them. Low tides occur when the moon and sun are at right angles to each other, creating less gravitational pull on the water.
Why Ocean Salinity increasing?
When evaporation occurs at a rate faster than precipitation, the net result is that salt is left behind and the salinity in the oceans will increase. Of course, new salt is brought into the ocean by rivers and deposition of salts on the sea floor takes salt out of the ocean. As a whole, the salinity of the ocean (total salt everywhere) has not changed for millions of years since these input and removal processes are in balance. The increased "saltiness" created by the imbalance between precipitation and evaporation in certain areas of the ocean (some very large) is balance by areas that are fresher so the whole ocean is not getting saltier.
The area of land that is covered at high tide but not at low?
This area is known as the intertidal zone. It is located between the high and low tide marks and is covered by water at high tide but exposed at low tide. Organisms living in this zone must adapt to frequent changes in water levels and conditions.
What is a mean high tide line?
The mean high tide line is the average location of the high tide over a specific period of time. It is used to demarcate the boundary between private and public property along coastal shorelines.
Daily tides are mainly caused by the gravitational pull of the Moon on the Earth's water. As the Earth rotates, the water is pulled towards the Moon, resulting in high tides. The Sun's gravitational force also plays a role in the tides, creating variations known as spring and neap tides.
High tides occur on the side of the Earth facing the moon and on the side opposite the moon due to the gravitational pull of the moon. High tides also occur on a much smaller scale in some areas due to local factors like wind or the shape of the coastline.
How many low tides happen at a given coast in any 24-hour period?
Up to 2 low-tides. It depends upon the alignment of the Sun and the Moon, the tides, the state of the ocean and the shape of the coastline. Some areas are semi-diurnal, with two high tides and two low tides. Other areas can receive a mixed tide, which is one low tide and one high tide per day.
Does new moon cause high tide?
New moon is happening once a month and it is the visibility and the location of the moon meanwhile high tide happens every day which means the nearest point between moon and earth and low tide is the other way around which means the farthest point between moon and earth, it could be high tide somewhere in the world and low tide in another part of the world as it takes the water from somewhere to somewhere else.
When was that record low tide Tacoma a few years ago?
The record low tide in Tacoma occurred on June 15, 2016, when the tide dropped to -3.51 feet. This event was part of a unique combination of factors, including a particularly low astronomical tide, that contributed to the extreme low tide.
The tides change because the gravitational pull from the Moon onto Earth. The Moons gravity pulls the water toward the moon. The Side of Earth facing the moon has a high tides. The Pull of gravity causes Oceans to bulge outward. On the other side of Earth, the Moons pull on solid ground causes the Oceans to bulge there too. The Earth rotates on its axis and so this bulge is constantly changing location. Where the bulge is bigger, its high tide. Where the water doesn't bulge is low tide.
I hope this helps, if there is anything else u want to ask me just let me know. For more information about Tides you could watch a brainpop on brainpop.com.
Further. The Earth's tides are a combination of the gravitation pull due to the Moon and also the Sun. When these add, we have the highest high tides. When these oppose, we have the lowest high tides.
Now, the moon takes roughly 28 days for its orbit of the Earth, and since this is NOT an simple multiple of the 24 hour rotation of the Earth, the tides gradually precess round the Earth - the afternoon High Tide will be roughly one hour later each day.
[Ignoring those folk in N Australia and the English Channel (+ +) where local conditions give several tides per day!]
Because Life can Change
What is a submerged sandbank of pebbles etc visible at low tide?
That would be a sandbar or a shoal. Sandbars are elongated ridges of sand, while shoals are shallow areas with a sandy or pebbly bottom that may be visible at low tide.
An area famous for its large tidal range is?
The Bay of Fundy in Canada is known for having the largest tidal range in the world, with tides that can reach up to 16 meters (53 feet) in height. This unique phenomenon results in dramatic changes in water levels and strong tidal currents, creating a rich ecosystem and landscape.
Where do you usually get high tides and when do they occur?
you usually get high tides when the moon affects gravitational pull on the earth, which triggers the ocean of the gravitational pull. low tides occur on the top of the earth, just the opposite of what i have stated! (just in case you wanted to know!)
The gravitational pull of the moon (and sun) pulls the world's oceans into a dome of water who's peak is closest to the source of the gravitational field. The dome is highest when the Sun and Moon are aligned with each other relative to the Earth. It is lowest when the Sun and Moon are on opposite sides of the Earth, hence the variation in Spring and Neap tides. As the Earth rotates, the land masses move relative to the dome of water, causing water levels at the shoreline to rise and fall. Strictly speaking the tide does not 'come in' and 'go out' horizontally - it rises and falls vertically. There is a popular misconception that all beaches are more dangerous on a falling tide - this isn't necessarily so. Local currents and wave conditions are more frequently governed by the shape and composition of the beach rather than any specific stage of the tide. Rip currents can (and do) form at any stage of the tide.
Why do tides occur twice a day?
During any 24 hour period, the moon nearly completes one revolution around earth [apparent motion, not true motion]. Combined tidal forces cause a bulge in the earth's water at the location roughly below the moon and also at the part of the earth opposite that location. A scarcity of water occurs in the places roughly at 90 degrees to those locations. So as the earth moves through a day, it 'passes under' two high tides and two low tides.
The intertidal zone is the area that is exposed to the air at low tide and submerged at high tide. (Also known as the "foreshore" or "littoral zone").
The intertidal zone is the area of the shoreline which is covered the rising tide during high tide and exposed during low tide.
After the Intertidal zone is the neritic zone which extends from the extreme low tide line to the continental shelf.
The Intertidal and Neritic zones are often also referred to as the Littoral and sublittoral zones, with the littoral zone beginning at the high water mark and extending to the low water mark and the sublitoral picking up where the littoral zone ends continuing on to the continental shelf.
The area covered by high tide, but exposed at low tide is called the intertidal zone.
What type of tides has the highest high tides and the lowest low tides called?
The least high tides and low tides are called neap tides when the sun, moon and earth form a right angle
Tides shift from high to low about every hour?
When the Moon waxes, high tide is about 5 hours prior to low; when it wanes, high tide is some 7 hours prior to low; this figure is adjusted by three factors: the age of the moon, its distance from the earth, & the strike of the coastline or other geographic features. Also, the actual time is dependent upon the time of meridian transit.: M+ 4sine( angle between Sun & Moon), if waxing before First Quarter, or waning before the Last Quarter,, this is the low tide, five hours earlier is the high; if waning before the Last Quarter or waxing before the First Quarter, subtract five hours from the result to get the High tide, then add 7 hours to the High to get Low. The adjustment for moon's distance is at most 58 minutes; coastal strike is one hour for every 15 degrees from true north. This will not give an exact result, but it will be close enough.
Change: HH M HL LH LL, Quarter H M L HM, Full LH M LL HH HL
Im sorry if your having trouble with figuring out the next neap tide. I have no idea and answers.com is stupid because people all over the world can type whatever they want :):):):):):)::):):):::)):):)
What are the bulges of water in the ocean called?
Bulges of water in the ocean caused by gravity are called tidal bulges. These bulges result from the gravitational forces of the moon and sun on Earth's surface, creating high tide at the location of the bulge.
In most coastal areas there are two high tides every day. What causes the two tides?
The Moon's gravity causes the high tides and low tides. Two tides happen each day, because the Earth and Moon actually form an orbital pair: that is, the Earth is not exactly 'stationary' with the Moon circling around it. Rather, it 'wobbles' a bit, away from the Moon as it orbits. This means that on the side of the Earth opposite the Moon, a 'bulge' of water is created due to Centrifugal Force. This is the other high tide, and it is always somewhat smaller than the high caused directly by the gravity of the moon. The actual height of the tides varies due to distance of the Moon (like all orbits, it is not exactly circular, but elliptical, and the distance between Earth and Moon varies). The Sun also exerts a considerable force, hence tides are bigger at Full Moon (Moon and Sun opposite each other), and even larger at New Moon (Moon and Sun pulling together on the same side of Earth). Because the Moon orbits a spinning Earth, it rises later each day at any given location, and so the tides get later (by approx 50 minutes) each day. By coincidence (?) this means that in a week, the tides have become later by approx 6 hours (7X50 minutes) so if high tide is, say, 8 o'clock today, it will be low tide at 8 o'clock (approx) in a week's time.
A spring tide occurs at the new moon or the full moon when the Sun, Moon and Earth are aligned thereby generating the greatest gravitational pull on the tides.
Spring tides occur during either a full or new moon. At these times, the tides are strong due to the gravitational force of the moon and sun
Why are high tide times different in different places of the Earth?
High tide times vary because they are influenced by factors such as the gravitational pull of the moon and sun, the shape of the coastline, the depth of the water, and the Earth's rotation. These factors create differences in the timing and height of tides at different locations around the world.
