0
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.
500 Questions
What are the similarities between spring tides and neap tides?
Asked by Wiki User
They both occur twice a year... and both involve high tides and low tides...
What is the difference in levels of ocean water at high tide and low tide?
Asked by Wiki User
I'm not sure what the answer is, ask your science teacher, or read your science book
How many islands during high tide and low tide?
Asked by Wiki User
how many islands does the Philippines having during high tides and low tides?
the answer is: 7,107 during low tide and 7,107 during high tide....... get it? the no. of islands never change at tide reversals, they will always be the same at 7,107.
maybe the correct question is: how many islands of the Philippines can you see during high/low tides? answer: no idea, maybe minus 7, 20, 50, 100 during low tide
Describe the relative positions of the earth the moon and the sun during neap tide?
Asked by Wiki User
Gravitational forces from both the sun and the moon continuously pull on the earth.although the moon is much smaller than the sun , the moon's gravity is the dominant force behind earth's tides
Do most places on earth expirerence one low tide and one high tide each day?
Asked by Wiki User
High tides occur when the Moon is Full and New. This is the major determinant, though the presence of other planets such as Mars has a minor but important effect, as does the part of the annual solar cycle we are travelling. So a High Tide - roughly every 14 days.
What positions of the moon do the smallest high tide occur on earth?
Asked by Wiki User
New moon and full moon
What causes tides to be high in one part of the day and low during another?
Asked by Wiki User
they're so high because when the sun, moon, and earth are in a line, their gravitational pull creates a tidal bulge on earth. during neap tides, the sun, moon, and earth are at a 90 degree angle, making more even tidal bulges, making high and low tides closer together than the spring tides.
What causes daily high and low tides?
Asked by Wiki User
The moon and earths gravitational pull (gravity)
What causes two high tides and two low tides in a day?
Asked by Wiki User
= Why Two High Tides a Day? = ---- Long before Newton, it was obvious that the moon exerted a force on the oceans. After all, day in and day out, year after year, ever since the oceans formed, there have been two high tides a day, once with the moon at its zenith and once again nearly 12 hours later. When the concept of universal gravitation was introduced, it quantified the forces involved and neatly accounted for the ocean tides. Today, anyone can tell you that the tides are caused by the "gravity" of the moon. Or are they? The oceans form a thin, incompressible, but easily deformable layer on most of the earth's surface. One might expect that the moon's gravitational force would pull the entire ocean layer towards it, distending the layer (producing a high tide) in the direction of the moon on the near side of the earth, while simultaneously compressing it (producing a low tide) on the opposite side of the earth (see Figure 1, not to scale). This model is half right and half wrong: half of all high tides are generated in exactly this way, but instead of there being a low tide on the far side of the earth, there is also a high tide. There must be some other explanation.
Indeed there is. The motion of the earth-moon system, taken in isolation, is a classical two-body problem where each body exerts an attractive force (gravity) on the other. Solving the equations of motion, one finds that the two bodies rotate about their common centre of mass, like a rigid asymmetric dumbbell spinning around an axis perpendicular to the bar. As shown in Figure 2, the centre of mass of the earth-moon system turns out to be inside the earth, about three-quarters of an earth radius from its center, along the line joining the earth and moon.
The earth, therefore, orbits the center of mass in a tight circle (almost) while the moon orbits in a large one. This orbital motion causes the earth to experience a centrifugal (pseudo-) force, which distends the ocean layer in the direction away from the moon, not unlike what happens to the water in a pail when you swing it in a circle. Combining this orbital effect with the direct gravitational pull of the moon explains the simultaneous high tides on opposite sides of the earth: on the near side the direct pull dominates and causes the oceans to bulge in the direction of the moon; on the far side the centrifugal effect dominates and causes the oceans to bulge in the direction away from the moon. As the earth spins on its axis, a given seaside location will experience a high tide when the moon is at its closest, and then another one about 12 hours later when it is at its furthest. Reality, of course, is never quite so simple. Although the sun is much farther away from the earth than the moon, it is also much more massive, so its gravitational pull on the earth is relatively large (almost half of what the moon exerts). It therefore plays a significant role in determining both the timing and strengths of the tides. So, are the tides caused by the "gravity" of the moon? In large part, yes. But the gravity of the earth is as much responsible for the two-body rotation as that of the moon. The tides are caused by the combined gravitational forces of the moon, earth, and sun. Here is a simpler explanation: Looking down from the North Star, the Earth rotates anticlockwise by about 180 degrees in 12 hours. During that same period of time, the moon travels on its orbit around the earth clockwise by about 180 degrees. The result is that the moon crosses the same earth longitude (but not necessarily the same latitude) every 12 hours, or twice every day. This results in 2 local high tides. The 2 low tides happen between times.
What is the largest known horizontal distance between high tide shoreline and low tide shoreline?
Asked by Wiki User
The tidal range is the vertical difference between the high tide and the succeeding low tide.
What zone is the point along the shoreline between the lowest and the highest high tide line and the lowest low tide line?
Asked by Wiki User
The slack water area is the space that lies between high and low tides
How can you calculate low tide to high tide?
Asked by Wiki User
well,this is one way, what happens is there is a long line of string which has every 10cm marked out on it. at the bottom of the string is a piece of led to weigh the string down.
you drop the string in the water and bring it back up again when it reaches the bottom of the water. you will know how high it is when you see where the string is wet,then feel your way up to where it's not then calculate how high the sea level is with the 10cm lines marked out
How long does it takes for a high tide to occur after a low tide?
Asked by Wiki User
about morning to day
What is the height of high tide?
Asked by Wiki User
it's not one absolute number. It varies from one locale to the next, and at given locale, it varies from one day to the next.
What alignment of the earth moon and sun cause the spring and neap tides?
Asked by Wiki User
The Earth's 23.5 degree tilt with respect to the orbital or ecliptic plane causes the Sun to rise higher in the sky during the summer months and lower in the winter months.. The spring and autumnal equinoxes correspond to the days on which the Sun is positioned directly over the equator and is observed to rise directly in the Eastern sky, resulting in exactly the same amount of daylight and nighttime everywhere on Earth.
How long does it take to go from one high tide to the next high tide?
Asked by Wiki User
On average, high tides are separated by about 12 hours and 24 minutes. The 12 hours is because of earth's rotation, and the 24 minutes is compensation for the movement of the moon. So low tides would be about half way through those 12 hour 24 minute periods.
How many time can you do hand practice in a month?
Asked by Wiki User
It could be 30 times a month, or more, or less.
For one thing, it depends on the individual and how frequently he feels like having sexual activity.
It also depends on how much partner sex he is gitting.
It also depends on how busy or bored he is, or how tired or energetic.
It also depends on his attitudes and beliefs. Some men consider masturbation sinful or childish and may avoid it. Others consider it a normal activity and a good way to relax.
What is The greatest level of high tide?
Asked by Wiki User
There is no such word as astronomically. It must have been used a thousand times in the last week. There are two astronomical tides every 24 hours. ( Maybe its just weather reporting license.)
How do tides change on Earth?
Asked by Wiki User
the penguins in Antarctica swim around in the sea and are very strong, so they pull and push the tides till all over the world.
Tides shift from high to low about every hour?
Asked by Wiki User
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
How does a barnacle protect itself during low tide?
Asked by Wiki User
A barnacle latches onto a rock with its single 'foot', much like a sucker, and hangs on for dear life. It can't protect itself and has to rely on it's shell to try to protect it from any hungry predators, dogs, cats(Although unlikely), or humans that wonder by.
