Can someone explain me how the tide is working .
Science says that the mass of the moon moves the water.
And there are periods of low tide and tide.
?
In Round Earth theory - gravity decreases as the distance between two objects gets larger.
The gravity of the moon pulls on the earth more strongly on the side closest to the moon and less strongly on the opposite side. This has the effect of making water flow towards where the moon is overhead.
This explains the high tide that happens every day more or less when the moon is at it's zenith. It takes a while for the water to actually flow to that spot - so there is typically a small delay between the actual high tide and the moon being overhead.
In Flat Earth theory - the proponents seem a little uncertain about the nature of gravity - but (perhaps) the moon still attracts water towards it - so (maybe) they could explain the high tide when the moon is overhead by similar means.
HOWEVER: (And this is a fatal flaw in Flat Earth theory) there are actually TWO high tides each day! One when the moon is overhead and another about 12 hours later when the moon (in Round Earth Theory) is beneath your feet.
What causes this second tide?
If the Earth is round, and the moon orbits around it then the Earth/Moon system must rotate around their mutual center of gravity (the "Barycenter"). This point about which both Earth and moon rotate is not at the center of the Earth - so our planet makes a little circular wobble:
Watch how the Earth moves relative to the green '+' sign in the animation about a minute into the video.
What this does is to cause a SMALL amount of centrifugal force that tugs at the side of the Earth that's furthest from the Moon...and THAT force creates the second tide.
This is interesting because there is NO force in Flat Earth theory that can explain that second tide.
Check out this page - scroll down to "HIGH TIDES AND LOW TIDES" and you'll see a graph of the water depth - with two minimums and two maximums:
http://www.tides4fishing.com/uk/england/southwold#_tidesI rather like this proof because anyone who lives on some open ocean beach can easily see the double tides for themselves.
In rivers, lakes and other confined areas, the results are less clear because the water is much delayed by the constrictions in flow - but the effect is very clear on open ocean beaches.