Tides by rockredstar

TIDESTIDESThe rise and low life of The rise and low life of

waterswaters

What is Tides?What is Tides?

Are motions caused by the gravitational Are motions caused by the gravitational attraction between earth, moon, and sun.attraction between earth, moon, and sun.

The periodic motion of the waters of the The periodic motion of the waters of the sea, caused by the attractive forces of the sea, caused by the attractive forces of the moon and the sun.moon and the sun.

Tides and the MoonTides and the Moon

Tides and the MoonTides and the Moon

Lunar tidesLunar tides

Tides and the MoonTides and the Moon

Lunar tidesLunar tides occur at every 12 hours and 48 minutes, occur at every 12 hours and 48 minutes,

alternating between Moon side and far side alternating between Moon side and far side high tides with lunar low tides in-between as high tides with lunar low tides in-between as reference.reference.

Tides and the MoonTides and the Moon

Lunar tidesLunar tides occur at every 12 hours and 48 minutes, occur at every 12 hours and 48 minutes,

alternating between Moon side and far side alternating between Moon side and far side high tides with lunar low tides in-between as high tides with lunar low tides in-between as reference.reference.

Water level highs and lows lag the tide Water level highs and lows lag the tide causing forces by 1-3 hours. Large amounts causing forces by 1-3 hours. Large amounts of water must flow long distances around of water must flow long distances around uneven land massesuneven land masses

Tides and the SunTides and the Sun

Tides and the SunTides and the Sun Solar tidesSolar tides Smaller and occur at different times than Smaller and occur at different times than

lunar tideslunar tides The solar high waters are about 12 hrs. The solar high waters are about 12 hrs.

apart as the earth rotates on its axisapart as the earth rotates on its axis The solar semidaily tide is only 46% that of The solar semidaily tide is only 46% that of

the lunar semidaily tide.the lunar semidaily tide.

Combined effects of Sun and MoonCombined effects of Sun and Moon

Combined effects of Sun and MoonCombined effects of Sun and Moon

Spring TidesSpring Tides

Combined effects of Sun and MooCombined effects of Sun and Moonn

Spring TidesSpring Tides

are the highest tides we have which are the highest tides we have which occur twice each month during the full occur twice each month during the full moon moon ((when the sun and the moon are in line with the earthwhen the sun and the moon are in line with the earth))

Combined effects of Sun and MoonCombined effects of Sun and Moon

Spring TidesSpring Tides

are the highest tides we have which are the highest tides we have which occur twice each month during the full occur twice each month during the full moon moon ((when the sun and the moon are in line with the earthwhen the sun and the moon are in line with the earth))

Neap TidesNeap Tides

Combined effects of Sun and MoonCombined effects of Sun and Moon

Spring TidesSpring Tides

are the highest tides we have which are the highest tides we have which occur twice each month during the full occur twice each month during the full moon moon ((when the sun and the moon are in line with the earthwhen the sun and the moon are in line with the earth))

Neap TidesNeap Tides

it is when tides are at their lowest, it is when tides are at their lowest, occur during the first and third quarter occur during the first and third quarter moon moon (when the sun and the moon are at right angles)(when the sun and the moon are at right angles)

Another kinds Another kinds of Tidesof Tides

Another kinds of tideAnother kinds of tidess

Perigean TidesPerigean Tides

Another kinds of tidesAnother kinds of tides

Perigean TidesPerigean Tides Like other heavenly bodies, the moon's orbit around Like other heavenly bodies, the moon's orbit around

the Earth is elliptical. Once each month, the moon the Earth is elliptical. Once each month, the moon passes by the Earth at perigee, which is about passes by the Earth at perigee, which is about 30,000 miles closer than at apogee, or the furthest 30,000 miles closer than at apogee, or the furthest point in orbit. point in orbit.

Another kinds of tidesAnother kinds of tides

Perigean TidesPerigean Tides Like other heavenly bodies, the moon's orbit around the Like other heavenly bodies, the moon's orbit around the

Earth is elliptical. Once each month, the moon passes Earth is elliptical. Once each month, the moon passes by the Earth at perigee, which is about 30,000 miles by the Earth at perigee, which is about 30,000 miles closer than at apogee, or the furthest point in orbit. closer than at apogee, or the furthest point in orbit.

When spring tides and perigee align, the moon's extra-When spring tides and perigee align, the moon's extra-strong pull results in unusually high tides, known as strong pull results in unusually high tides, known as perigean tides. Perigean tides take place at intervals perigean tides. Perigean tides take place at intervals that are slightly longer than six months, according to the that are slightly longer than six months, according to the Woods Hole Oceanographic Institution.Woods Hole Oceanographic Institution.

Another kinds of tidesAnother kinds of tides

Diurnal TidesDiurnal Tides

Another kinds of tidesAnother kinds of tides

Diurnal TidesDiurnal Tides If one high tide and one low tide take place in If one high tide and one low tide take place in

a lunar day, it's known as a diurnal tide. a lunar day, it's known as a diurnal tide. Diurnal tides create 24-hour, 50-minute tidal Diurnal tides create 24-hour, 50-minute tidal periods.periods.

Another kinds of tidesAnother kinds of tides

Diurnal TidesDiurnal Tides If one high tide and one low tide take place in If one high tide and one low tide take place in

a lunar day, it's known as a diurnal tide. a lunar day, it's known as a diurnal tide. Diurnal tides create 24-hour, 50-minute tidal Diurnal tides create 24-hour, 50-minute tidal periods. periods.

Oceans in partially enclosed basins, such as Oceans in partially enclosed basins, such as the Caribbean and the Gulf Coast of the U.S. the Caribbean and the Gulf Coast of the U.S. often experience diurnal tides.often experience diurnal tides.

Another kinds of tidesAnother kinds of tides

Semi-Diurnal TidesSemi-Diurnal Tides

Another kinds of tidesAnother kinds of tides

Semi-Diurnal Semi-Diurnal When two high and two low tides of the same When two high and two low tides of the same

height take place in a lunar day, it's called a height take place in a lunar day, it's called a semi-diurnal tide.semi-diurnal tide.

Another kinds of tidesAnother kinds of tides

Semi-Diurnal Semi-Diurnal When two high and two low tides of the same When two high and two low tides of the same

height take place in a lunar day, it's called a height take place in a lunar day, it's called a semi-diurnal tide. semi-diurnal tide.

Semi-diurnal tidal periods are 12 hour and 25 Semi-diurnal tidal periods are 12 hour and 25 minutes long. Most coastlines experience minutes long. Most coastlines experience semi-diurnal tides.semi-diurnal tides.

Another kinds of tidesAnother kinds of tides

Mixed tidesMixed tides

Another kinds of tidesAnother kinds of tides

Mixed tidesMixed tides   where successive high-water and low-water where successive high-water and low-water

stands differ appreciably .stands differ appreciably .

Another kinds of tidesAnother kinds of tides

Mixed tidesMixed tides   where successive high-water and low-water where successive high-water and low-water

stands differ appreciably .stands differ appreciably . In these tides, we have a higher high water In these tides, we have a higher high water

and lower high water as well as higher low and lower high water as well as higher low water and lower low water.water and lower low water.

THANK YOU THANK YOU AND GOD AND GOD BLESS US!BLESS US!By Rochelle D. BernasBy Rochelle D. Bernas