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PRESENTATION OUTLINE

TIDES

BY ALEENA LUY AND EVELYN SANCHEZ TABLE :2 PERIOD: 5

HOW DO TIDES DEVELOP?

Photo by wonderferret

Tides develop by force from the moon and the sun. Gravity is the major force that creates tides. Ocean tides result from the gravitational attraction of the sun and the moom on the oceans of the earth.

HIGH TIDES

Photo by kenny barker

If you are on the coast and the moon is directly overhead, you should experience a high tide. If the moon is directly overhead on the opposite side of the earth, you should also experience a high tide.
During the day, the Earth rotates 180 degrees in 12 hours. The moon, meanwhile, rotates 6 degrees around the earth in 12 hours. The twin bulges and the moon's rotation mean that any given coastal city experiences a high tide every 12 hours and 25 minutes or so.

LOW TIDES

We experience a low tide when it is neither facing the moon nor facing away from it. During this time, the tidal bulges are happining in diffrent times. Low tides also happen every 12 hours and 25 minutes, which is high and low tides.

SPRING TIDES

During full or new moons which happens when the Earth, sun, and moon are facing each other.This happens twice each month. The moon appears new
when it is directly between the earth and the sun. The moon appears full when the earth is between the moon and the sun. The gravitational pull of the sun is added to the gravitational pull of the moon on earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher than usual. These are called spring tides.

NEAP TIDES

During the moon's quarter phases the sun and moon work at right angles, causing the bulges to cancel each other. The result is a smaller difference between high and low tides and is known as a neap tide. Neap tides are weak tides. They happen when the gravitational forces of the Moon and the Sun are perpendicular to each other. Neap tide happens during quarter moons.

THESE ARE ALL 4 TIDES THAT WE HAVE IN OUR OCEANS.

BY ALEENA LUY AND EVELYN SANCHEZ
Photo by ChrisGoldNY