Tides: High Tide and Low Tide

| December 10, 2009 | 37 Comments

The position of the moon relative to the earth causes lunar tide.

Tides are the rhythmic rise and fall of ocean or sea water caused by the combined effects of the rotation of the Earth and the gravitational forces exerted by the Moon and the Sun.

high tideThe earth has two high tides and two low tides everyday.  High tide takes place on the side of the earth facing the moon as it circles the earth.  The moon’s gravity pulls the water away from the earth.  The water of the seas piles up and forms high tides.

As the earth turns, the part of the sea that was high moves away from the moon’s gravity.  The water then sinks back.  In about six hours, this part will go all the way down to a level called low tide.

low tide As the earth turns, one high tide stays close to the moon.  Another high tide stays on the opposite side of the earth where the force of the earth’s spin pushes the water outward.

Like the moon, the sun’s gravity also pulls the earth’s water to itself and causes solar tides.

During the new moon and full moon, the lunar and solar tides together produce the larger spring tides.  At the first and last quarters of the moon, lunar and solar tides produce the smaller tides called neap tides.

Tides affect man and his activities.  Fishermen take their boats out to the sea during the morning high tide and bring them back during the evening high tide.

At the beach, you can jump right in the water for a swim at high tide.  At low tide, you may have to pick your way over the rocks to get to the water.

Harbor pilots bring in ocean liners at high tide when the water in the harbor is deep enough for them to sail on.tides

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Category: Earth Science

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  1. jolina says:

    succesful work

  2. fe tugare says:

    excellent site for my daughters’ review material…thanks a lot!

  3. jessiel says:

    your explanation is very good…….so make it good and correct for a long long time……..tnx!!!!

  4. bh0xz Enaj says:

    the explenation is not true because…la lang..hahaahha :)

  5. kaila camille sayson says:

    so gnda ng comment it is very clear…………….

  6. .... says:

    thank you so much!! now we’ve got something for our group report…

  7. Oscar Lee says:

    what are the advantages and disadvantage of low tide and high tide

  8. junrilber says:

    thank you for this website makukuha ko na ang project ko ahahaha

  9. bhabes says:

    yehey na kuha ko na yung project ko

  10. nice work .. ! keep it up . good explanation .. it helps me a lot . ! for my studies and review in my science quiz. :) hope this will be questioned. so i can answer it well.

  11. eden says:

    yeah thank you puh.. taas grade ko

  12. julie ann says:

    tnx kz ntulungan niyo aq sa assignment q

  13. joy :) says:

    thanks a lot. :) big help.

  14. Dave says:

    Nice … I Liked it … Tnxxx so much …

  15. erf says:

    thanks for this thanks a lot

  16. thank poh kung wla pong ganyan baba grade ko thanks poh very good poh ako sa school

  17. thank you sa gumawa nito kung wala ito wala ako ma rereport sa science

  18. christian says:

    SAwakas MEron na akong ibibigay kay MRs.MAGALLANES

  19. Mc lorenz torreda says:

    thank you sa gumawa nito, kong wala ito bababa nanaman ang grade ko sa science.

  20. Mc lorenz torreda says:

    sana magtagompay ako…………………..

  21. hahaahhahahahyyyyyyyyyyy!!!!

  22. hi guyssss!! love yah <3.

  23. mae aniciete says:

    thank you very much sa gumawa nito

  24. mae aniciete says:

    high tide and low tide AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!THANK YOU VERY VERY MUCH & MORE

  25. mae aniciete says:

    :P OOP:
    :)
    ;)

  26. owie says:

    There are places on Earth that has only one high tide and one low tide a day. It all depends on the location and the angle it makes with the moon. If a place experiences two high tides and two low tides a day, this is called semi diurnal tides. If it has only one high tide and one low tide a day then it has diurnal tides.

    For the places that has semi diurnal tides, sometimes one high tide is higher than the other on the same day (same for low tides) and in some places both high tides have about the same magitude (again same for low tides)

  27. its clearly
    your explanation is clear

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