Why do tides come?

Answer 1

Tides are a result of gravitation between the Earth and Moon distorting the shape of the Earth. The Earth stretches very slightly to elongate in the direction of the Moon, while the Moon elongates significantly more in the direction of the Earth. This elongation is most noticeable in the Earth's water, because it's a fluid that can move in response to the force. There are "land tides" as well, but they don't usually have effects that are observable without advanced scientific tools.

Answer 2

The tide is the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth. Tides cause changes in the depth of the sea, and also produce oscillating currents known as tidal streams, making prediction of tides important for coastal navigation (see Tides and navigation, below). The strip of seashore that is submerged at high tide and exposed at low tide, the intertidal zone, is an important ecological product of ocean tides.

The changing tide produced at a given location on the Earth is the result of the changing positions of the Moon and Sun relative to the Earth coupled with the effects of the rotation of the Earth and the local bathymetry (the underwater equivalent to topography). Though the gravitational force exerted by the Sun on the Earth is almost 200 times stronger than that exerted by the Moon, the tidal force produced by the Moon is about twice as strong as that produced by the Sun. The reason for this is that the tidal force is related not to the strength of a gravitational field, but to its gradient. The field gradient decreases with distance from the source more rapidly than does the field strength; as the Sun is about 400 times further from the Earth than is the Moon, the gradient of the Sun's field, and thus the tidal force produced by the Sun, is weaker.

Answer 3

Moon attracts ocean which forms an oval-shaped body of water around the earth. Earth rotates within this body of water, when hitting a high point of the oval you get a high tide, when a low point, a low tide

Answer 4

The net result of gravitational force Sun,moon and earth and rotaion of these planets causes tides to form

Answer 5

One model woul be a tub of water;it you yere to push the water down on one side with a ballon it will bring the water level up.If you bring the ballon upt toward the surface the water level will go down. Its a matter of push and release.
In the case of the earth the moon is the balloon wich will create tthe same effect as the water in the tub.This effect is the gravity push on the oceans causing water level to go up or to go down. The Up and down movement of the water on the shores is called tide.

Answer 6

Because of the Gravitational pull of Sun and Moon.

Answer 7

The gravitational pull of the moon acting on the oceans.

Answer 8

on the ocean surface there will be no obstacles for the wind so wind blows fast due to the wind water starts to move near the shore due to the gravitational pull of the moon water raises up

Answer 9

Because of the gravitational pull from the moon.

Answer 10

They come for the same reason that they go...gravitational pull from the moon.