Near Oceans

download Near Oceans

of 12

Transcript of Near Oceans

  • 8/8/2019 Near Oceans

    1/12

    OCEANS AND

    BODIES OF WATERS

  • 8/8/2019 Near Oceans

    2/12

    An ocean (from Greek, Okeanos

    (Oceanus)) is a major body ofSeawater (saltwater). The Earth's oceans cover approximately71% of the Earth's surface, 361,000,000 squarekilometres (139,000,000 sq mi), and can be as

    deep as of 10,923 metres (6.787 mi). Scientistsestimate that 230,000 marine life forms of alltypes are currently known, but the total could be

    up to 10 times that number.[1]

    http://en.wikipedia.org/wiki/Greek_languagehttp://en.wikipedia.org/wiki/Oceanushttp://en.wikipedia.org/wiki/Oceanushttp://en.wikipedia.org/wiki/Seawaterhttp://en.wikipedia.org/wiki/Earthhttp://en.wikipedia.org/wiki/Earthhttp://en.wikipedia.org/wiki/Surfacehttp://en.wikipedia.org/wiki/Surfacehttp://en.wikipedia.org/wiki/Earthhttp://en.wikipedia.org/wiki/Earthhttp://en.wikipedia.org/wiki/Seawaterhttp://en.wikipedia.org/wiki/Oceanushttp://en.wikipedia.org/wiki/Oceanushttp://en.wikipedia.org/wiki/Oceanushttp://en.wikipedia.org/wiki/Greek_language
  • 8/8/2019 Near Oceans

    3/12

    The oceans are (from largest to smallest):

    Pacific Oceanwhich separatesAsia from theAmericas

    Atlantic Oceanwhich separates the Americas from Europe andAfrica

    Indian Oceanwhich separates Africa from India and India fromAustralia

    Arctic Oceanwhich borders the northern continents and encompasses the farNorth including the North pole.

    The Pacific and Atlantic may be further subdivided by the equator intonorthern and southern portions. Smaller regions of the oceans are calledseas

    ,gulfs

    , bays

    , straits and other names.

    A Southern ocean, surroundingAntarctica and extending to 60S was definedin the year 2000.

    Geologically, an ocean is an area ofoceanic crust covered by water. Oceaniccrust is the thin layer of solidified volcanic basalt that covers the Earth'smantle. Continental crust is thicker but less dense. From this perspective, theearth has three oceans: the World Ocean and theCaspian and Black Seas. Thelatter two were formed by the collision ofCimmeriawith Laurasia. The

    Mediterranean Sea is at times a discrete ocean, because tectonic platemovement has repeatedly broken its connection to the World Ocean throughthe Strait of Gibraltar. The Black Sea is connected to the Mediterraneanthrough the Bosporus

    , but the Bosporous is a natural canal cut throughcontinental rock some 7,000 years ago, rather than a piece of oceanic sea floorlike the Strait of Gibraltar.

    Despite their names, smaller landlocked bodies of saltwater that arenot

    connected with the World Ocean, such as theAral Sea are actuallysalt lakes.

    http://en.wikipedia.org/wiki/Pacific_Oceanhttp://en.wikipedia.org/wiki/Asiahttp://en.wikipedia.org/wiki/Americashttp://en.wikipedia.org/wiki/Atlantic_Oceanhttp://en.wikipedia.org/wiki/Europehttp://en.wikipedia.org/wiki/Africahttp://en.wikipedia.org/wiki/Indian_Oceanhttp://en.wikipedia.org/wiki/Indiahttp://en.wikipedia.org/wiki/Australiahttp://en.wikipedia.org/wiki/Arctic_Oceanhttp://en.wikipedia.org/wiki/Equatorhttp://en.wikipedia.org/wiki/Northhttp://en.wikipedia.org/wiki/Southhttp://en.wikipedia.org/wiki/Seahttp://en.wikipedia.org/wiki/Headlands_and_bayshttp://en.wikipedia.org/wiki/Bayhttp://en.wikipedia.org/wiki/Straithttp://en.wikipedia.org/wiki/Southern_oceanhttp://en.wikipedia.org/wiki/Antarcticahttp://en.wikipedia.org/wiki/Oceanic_crusthttp://en.wikipedia.org/wiki/Basalthttp://en.wikipedia.org/wiki/Mantle_(geology)http://en.wikipedia.org/wiki/Continental_crusthttp://en.wikipedia.org/wiki/Caspian_Seahttp://en.wikipedia.org/wiki/Black_Seahttp://en.wikipedia.org/wiki/Cimmerian_platehttp://en.wikipedia.org/wiki/Laurasiahttp://en.wikipedia.org/wiki/Mediterranean_Seahttp://en.wikipedia.org/wiki/Plate_tectonicshttp://en.wikipedia.org/wiki/Plate_tectonicshttp://en.wikipedia.org/wiki/Strait_of_Gibraltarhttp://en.wikipedia.org/wiki/Bosporushttp://en.wikipedia.org/wiki/Canalhttp://en.wikipedia.org/wiki/Aral_Seahttp://en.wikipedia.org/wiki/Salt_lakehttp://en.wikipedia.org/wiki/Salt_lakehttp://en.wikipedia.org/wiki/Aral_Seahttp://en.wikipedia.org/wiki/Canalhttp://en.wikipedia.org/wiki/Bosporushttp://en.wikipedia.org/wiki/Strait_of_Gibraltarhttp://en.wikipedia.org/wiki/Plate_tectonicshttp://en.wikipedia.org/wiki/Plate_tectonicshttp://en.wikipedia.org/wiki/Mediterranean_Seahttp://en.wikipedia.org/wiki/Laurasiahttp://en.wikipedia.org/wiki/Cimmerian_platehttp://en.wikipedia.org/wiki/Black_Seahttp://en.wikipedia.org/wiki/Caspian_Seahttp://en.wikipedia.org/wiki/Continental_crusthttp://en.wikipedia.org/wiki/Mantle_(geology)http://en.wikipedia.org/wiki/Basalthttp://en.wikipedia.org/wiki/Oceanic_crusthttp://en.wikipedia.org/wiki/Antarcticahttp://en.wikipedia.org/wiki/Southern_oceanhttp://en.wikipedia.org/wiki/Straithttp://en.wikipedia.org/wiki/Bayhttp://en.wikipedia.org/wiki/Headlands_and_bayshttp://en.wikipedia.org/wiki/Seahttp://en.wikipedia.org/wiki/Southhttp://en.wikipedia.org/wiki/Northhttp://en.wikipedia.org/wiki/Equatorhttp://en.wikipedia.org/wiki/Arctic_Oceanhttp://en.wikipedia.org/wiki/Australiahttp://en.wikipedia.org/wiki/Indiahttp://en.wikipedia.org/wiki/Indian_Oceanhttp://en.wikipedia.org/wiki/Africahttp://en.wikipedia.org/wiki/Europehttp://en.wikipedia.org/wiki/Atlantic_Oceanhttp://en.wikipedia.org/wiki/Americashttp://en.wikipedia.org/wiki/Asiahttp://en.wikipedia.org/wiki/Pacific_Ocean
  • 8/8/2019 Near Oceans

    4/12

    The ocean has a significant effect on the biosphere. OceanicEvaporation, as a phase of the water cycle, is the source ofmost rainfall, and ocean temperatures determine climate andwind patterns that affect life on land. The border betweenland and ocean itself provides critical habitat for many

    species that require both to thrive. Life within the ocean evolved 3 billion years prior to life on

    land. Both the depth and distance from shore stronglyinfluence the amount and kinds of plants and animals that livethere

    http://en.wikipedia.org/wiki/Biospherehttp://en.wikipedia.org/wiki/Evaporationhttp://en.wikipedia.org/wiki/Water_cyclehttp://en.wikipedia.org/wiki/Rainhttp://en.wikipedia.org/wiki/Climatehttp://en.wikipedia.org/wiki/Windhttp://en.wikipedia.org/wiki/Lifehttp://en.wikipedia.org/wiki/Evolutionhttp://en.wikipedia.org/wiki/Planthttp://en.wikipedia.org/wiki/Animalhttp://en.wikipedia.org/wiki/Animalhttp://en.wikipedia.org/wiki/Planthttp://en.wikipedia.org/wiki/Evolutionhttp://en.wikipedia.org/wiki/Lifehttp://en.wikipedia.org/wiki/Lifehttp://en.wikipedia.org/wiki/Windhttp://en.wikipedia.org/wiki/Climatehttp://en.wikipedia.org/wiki/Rainhttp://en.wikipedia.org/wiki/Water_cyclehttp://en.wikipedia.org/wiki/Evaporationhttp://en.wikipedia.org/wiki/Biosphere
  • 8/8/2019 Near Oceans

    5/12

    PLANTS NEAR OCEAN

  • 8/8/2019 Near Oceans

    6/12

    It is a small evergreentree growing to 10-12m(~32 ft) tall, with a short,

    often irregularly shapedtrunk. The leaves arespirally arranged, leatherytextured, elliptic toobovate, 4 to 22 cm longand 2 to 15 cm broad,with a smooth margin. Theflowers are produced in apanicle orcorymb up to

    26 cm long, each flowersmall, pale green at firstthen turning reddish, withfive slender, acute petals 7

    to 15 mm long.Cashew treeAnacardium occidentale

    http://en.wikipedia.org/wiki/Corymbhttp://en.wikipedia.org/wiki/Corymb
  • 8/8/2019 Near Oceans

    7/12

    Bakong has large, coated bulbs, 5 to10 centimeters in diameter. The leaves are

    crowded at the apex, lanceolate, 90to 150centimeters long, 12 to 15 centimeters wide.The scape, arising from the axils of the oldleaves, is erect, stout, and solid, 1 meter highor less. The spathe subtending the flowers isabout 15 centimeters long. The flowers arefragrant, 20 to 40, each subtended by a thin,

    narrow bracteole. The perianth tube isgreenish, and about 1 centimeter long; andthe lobes are spreading, white, linear,recurved or revolute, about 8 centimeterslong, and 8 millimeters wide. The filamentsare very slender, free, and purplish above.The fruits are subglobose, about 5centimeters in diameter.

    Bakong/Spider LilyCrinum Asticum

  • 8/8/2019 Near Oceans

    8/12

    H. tiliaceuscan be found atelevations from sea level to 800 metres(2,600 ft) in areas that receive 9002,500

    millimetres (35

    98 in) of annual rainfall.It is commonly found growing on thebeach, by rivers and in mangroveswamps. Sea Hibiscus is well adapted togrow in coastal environment in that it

    tolerates salt and waterlogging and cangrow in quartz sand, coral sand, marl,limestone,and crushed basalt. Theflowers ofH. tiliaceousare bright yellow

    with a deep red centre upon opening.Over the course of the day, the flowersdeepen to orange and finally red beforethey fall. The branches of the tree oftencurve over time.

    MalobagoHibiscus tiliaceus

  • 8/8/2019 Near Oceans

    9/12

    Pandanus is a genus ofmonocots with about 600known species. Plants vary insize from small shrubs less than1 metre (3.3 ft) tall, up tomedium-sized trees 20 metres(66 ft) tall, typically with a broadcanopy and moderate growthrate. The trunk is stout, wide-branching, and ringed withmany leaf scars. They

    commonly have many thickprop roots near the base, whichprovide support as the treegrows top-heavy with leaves,fruit, and branches. The leavesare strap-shaped, varyingbetween species from

    30 centimetres (12 in) up to2 metres (6.6 ft) or more long,and from 1.5 centimetres(0.59 in) up to 10 centimetres(3.9 in) broad.

    Cashew treePanadus odoratissimus

    http://en.wikipedia.org/wiki/Monocothttp://en.wikipedia.org/wiki/Monocothttp://en.wikipedia.org/wiki/Genushttp://en.wikipedia.org/wiki/Monocothttp://en.wikipedia.org/wiki/Specieshttp://en.wikipedia.org/wiki/Specieshttp://en.wikipedia.org/wiki/Specieshttp://en.wikipedia.org/wiki/Specieshttp://en.wikipedia.org/wiki/Monocothttp://en.wikipedia.org/wiki/Genus
  • 8/8/2019 Near Oceans

    10/12

    Size: a wide spread fanpalm, grows up to morethan 15 feet in height.

    Trunk: multiple clumps, slimclustering ending as adense bush.Origin: Indonesia but nowalso growing in Suriname.

    Leaf: circular shaped, withsquared-off ends.Flower stalk: from amongthe leaf bases.Fruit: bright red, the size ofa marble (about 0,5 inch

    in diameter).Seed: small and round.

    BalatbatLicuala spinosa

  • 8/8/2019 Near Oceans

    11/12

    Cyperus alternifolius, syn. Cyperusracemosus is also known asumbrella plant or umbrella

    sedge. It is a perennial plantwhich is native to Madagascar,Mauricius and The Runionisland. It can reach up to about3-6 ft (1-2 m) tall, depending onthe growing conditions.Leaves - This plant has an

    evergreen foliage, composedof long stems with involucralbracts at the top. These bractslook like narrow leaves.Flowers - The umbelliforminflorescence is composed of10-20 small clusters of green-white tiny flowers. It appears atthe end of the stems, on top ofthe leaf-shaped bracts.

    MalabawangCyperis alternifolius

  • 8/8/2019 Near Oceans

    12/12

    Cyperus alternifolius, syn. Cyperusracemosus is also known asumbrella plant or umbrella

    sedge. It is a perennial plantwhich is native to Madagascar,Mauricius and The Runionisland. It can reach up to about3-6 ft (1-2 m) tall, depending onthe growing conditions.Leaves - This plant has an

    evergreen foliage, composedof long stems with involucralbracts at the top. These bractslook like narrow leaves.Flowers - The umbelliforminflorescence is composed of10-20 small clusters of green-white tiny flowers. It appears atthe end of the stems, on top ofthe leaf-shaped bracts.

    MalabawangCyperis alternifolius