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OCEANS. By: Seymour Simon. Tides. The rise and fall of the water in the ocean. High tide and low tide each happen two times a day. Tides are caused by gravity from the sun and the moon. There are different types of tides. Spring Tides.

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Oceans l.jpg

OCEANS

By:

Seymour Simon


Tides l.jpg
Tides

  • The rise and fall of the water in the ocean.

  • High tide and low tide each happen two times a day.

  • Tides are caused by gravity from the sun and the moon.

  • There are different types of tides.


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Spring Tides

  • The biggest tides – caused when the sun and the moon are lined up with the Earth.


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Neap Tides

  • The smallest tides – caused when the sun and the moon are perpendicular to each other.



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Low tide

Mid tide

High tide


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Waves low tide in the world!!

  • Waves can be caused by wind or by underwater earthquakes.

  • When they are caused by underwater earthquakes, they are called a tsunami (su-NAH-mee).

  • One of the most devastating tsunamis occurred in December of last year in the Indian Ocean.


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Tsunami area low tide in the world!!


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Tsunami waves low tide in the world!!

A tsunami is caused by an underwater earthquake. The earthquake causes a gigantic movement of water. This water moves through the ocean until it hits land.

Click here to see an animation of the waves from the December 2004 tsunami in Asia.


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Tsunami damage low tide in the world!!

before

after


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Tsunami damage low tide in the world!!

before

after


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Tsunami damage low tide in the world!!

before

after


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Tsunami damage low tide in the world!!

before

after


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Waves low tide in the world!!

  • Waves can also be formed by the wind.

  • Waves are the wind’s energy. Only the energy moves forward, the water only moves in a circle.

  • The water ends up where it started (look at blue dots)


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Largest wave low tide in the world!!

  • The largest wave on record is 112 feet high. This is the height of a 10-story building!!!


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Credits low tide in the world!!

  • http://www.bim.ie/templates/tides.asp?node_id=416

  • http://www.amazon.com/exec/obidos/tg/detail/-/0688154786/qid=1127745845/sr=2-1/ref=pd_bbs_b_2_1/104-8136935-6923145?v=glance&s=books

  • http://www.thehopewellrocks.com/

  • http://www.elite.net/~thehalls/maasdam2.html

  • http://www.digitalglobe.com/tsunami_gallery.html

  • http://www.noaanews.noaa.gov/video/tsunami-worldpropagation2004.mov

  • http://geology.com/articles/tsunami-map.shtml

  • http://www.mapsofworld.com/world-news/clickable-south-asia-map.html

  • http://www.kettering.edu/~drussell/Demos/waves/wavemotion.html