what causes hightide and lowtide?

Answer 1

Tides are a result of the gravitation of the moon. The moon's gravitational influence draws oceanic water toward it's center of mass. Because of the rotation of the earth, this sets up a giant standing wave that has a high point on the side facing the moon, another high facing away from the moon, and lows at 90 degrees to that line. The earth rotates once a day, so each coastal point basically passes through 2 highs and 2 lows each day. Because the moon orbits on a 4 week cycle, there is a gradual shift of times for peak tides.

Additionally, the sun has gravitational influence on the ocean levels. It too creates its standing wave. When the sun and the moon are either on the same side of the earth or on opposite sides, their standing waves tend to coincide. The phenomenon is greatest when they are on the same side ("new moon"). When they are at 90 degrees from eachother, the tides tend to be minimized.

Tides cause flow. To some degree the local phenomena of tides is determined by the coastal flow characteristics. Places where flow is limited by complex terrain have high tides that lag behind similarly located points where the coastal topography is spare.

I hope that answers your question.

How this relates to any medical condition, I have no idea!! (You posted this question under "diseases and conditions - skin"

Answer 2

The Moon's gravitational influence on the Earth

Answer 3

The gravitional pull of the moon

Answer 4

The pull of our moon's gravity causes the tides.

Answer 5

The gravitational pull of the moon.

Answer 6

the sun also affects the tides not just the moon. When the tides get extremely high or low it is because the moon and sun are pulling oppisite directions

Answer 7

It is a force of the moon. Attached a link if you are interested!

Answer 8

The moon!

Answer 9

the moons gravitational pull.

Answer 10

the moon