The Med Sea is actually tidal and not non tidal although the tides of the Med Sea are limited because of the narrow outlet/inlet with the Atlantic ocean and there amplitude is very low, averaging a few centimeters, (instead of 1 meter of so in the Atlantic ocean).
There are only 3 tides on some days because of the gravitational pull of the moon which can change from day to day.
However most places have 2 tides per day and sometimes 4 tides per day or over a 24 hour period.
99% of the world just has 2 tides a day and the reason for that is basically the moon and the sun pull on the Earth and on the water around it.
If you're close to something massive it's got a stronger attraction due to gravity than something farther away.
Water on the side of the Earth closest to the moon is going to get pulled the hardest and the Earth which is in the middle is doing to get pulled slightly less hard and the water on the far side is going to get pulled even less hard.
So you tend to get two bulges of water: one is the bulge of water close to the moon and the other bulge of water on the other side which is getting left behind.
That's the reason why most places get 2 tides a day.
Some places get 4 - the only place I know about it is Southampton, Portsmouth in the UK by the Isle of Wight.
If you look very closely at the map of the Isle of Wight it has funnels on each side of the channel just north of it.
As the water rushes up the channel it sort of piles into these funnels and then as it gets narrower the wave gets higher.
You actually get a high tide as the water rushes up.
You get another one on the other funnel as the water rushes back down the channel so you get twice as many tides as you should have.
One tide is higher than the other because when a given location on Earth makes one revolution in a 24 hour period it experiences one high tide that is higher than the other and one lower low tide.
The tide that occurs twice a day is high tides.
High Tides are the tides that occur twice a day every 12 hours and 25 minutes.
The moon's gravitational pull on the Earth and the Earth's rotational force are the two main factors that cause high and low tides.
The side of the Earth closest to the Moon experiences the Moon's pull the strongest, and this causes the seas to rise, creating high tides.
The 4 types of tides are.
Diurnal Tide.
A diurnal tide has one episode of high water and one episode of low water each day.
Semi-diurnal Tide.
A semi-diurnal tide has two episodes of equal high water and two episodes of low equal water each day.
Mixed Tide.
Meteorological Tide.
A spring tide is a tide that occurs before the neap tide and the neap tide occurs 7 days after the spring tide.
A perigean spring tide, also known as a proxigean spring tide, is a tide that occurs three or four times per year when a perigee coincides with a spring tide.
This has a slight but measurable impact on the spring tide, usually adding no more than a couple of inches.
A neap tide is a tide just after the first or third quarters of the moon when there is least difference between high and low water.
A neap tide seven days after a spring tide refers to a period of moderate tides when the sun and moon are at right angles to each other.
The great lakes do actually have tides but the great lakes only have small tides that are not easily noticeable.
Minor variations are masked by the greater fluctuations in lake levels produced by wind and barometric pressure changes.
Consequently, the Great Lakes are considered to be non-tidal.
Water levels in the Great Lakes have long-term, annual, and short-term variations.
Lunar tides are the part of a terrestrial tide due to the mutual attraction between earth and moon.
The solar tides are toward the sun and away from the sun.
The total tide is the sum of the solar and lunar tides and depends on the alignment of the sun and the moon.
Since each phase of the moon also depends on the alignment of the sun and the moon, the pattern of tides follows the moon's phases.
Tides are important to life on Earth because they help to remove pollutants and circulate nutrients ocean plants and animals need to survive.
Other reasons Tides are important to life on earth include
They can cause a change in landforms of the Earth.
While they can destroy coastlines, they also help in the formation of creeks and inlets.
Strong tides help in the building of lower flood plains of rivers.
Tides affect other aspects of oceanic life, including the reproductive activities of fish and ocean plants.
Floating plants and animals ride the tidal currents between the breeding areas and deeper waters.
The force that causes tides is the moons pull as well as gravity.
Although gravity is the major force that causes tides to occur and the ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth.
The amount of tides in a day is 2 tides per day.
Although in reality in a 24 hour day period there are in total of 4 tides which are 2 high tides and 2 low tides.
Because the earth rotates through two tidal “bulges” every lunar day, we experience 2 high and 2 low tides every 24 hours and 50 minutes.
The different types of tides include.
Diurnal Tide.
A diurnal tide has one episode of high water and one episode of low water each day.
Semi-diurnal Tide.
A semi-diurnal tide has two episodes of equal high water and two episodes of low equal water each day.
Mixed Tide.
Meteorological Tide.
The first of them is the value awarded to the height of the tide and is the one reflected in the tide tables.
The second is the lunar phase and is directly related to the average activity of fish in the solunar charts.
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 from the moon.
These bulges of water are high tides.
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun, and the rotation of the Earth.
Tide tables can be used for any given locale to find the predicted times and amplitude.