Dimanakah berakhirnya laut? Mengapa Laut berwarna biru?/ Where the end of the sea? Why is sea blue? FOR GENERAL GEOGRAPHY
Dimanakah berakhirnya laut? Mengapa Laut berwarna biru?
(sumber: Rosda Group.1994. Ensiklopedi Laut dan Samudera. Jakarta: PT Rosda Jayaputra.)
A) Dimanakah berakhirnya laut?
Dahulu, orang beranggapan bumi kita datar seperti sebuah piring. Oleh karena itu, tidak ada orang yang berani naik kapal sampai jauh. Mereka takut akan menjumpai jurang yang dalam menganga di ujung laut. Betapa mengerikan jika sampai jatuh ke dalamnya. Sekarang, semua orang tahu bahwa bumi itu bulat. Di seberang laut dan samudera ada Negara dan laut yang lain. Jika kalian menjelajahi deretan Negara itu, suatu saat kalian akan tiba kembali di tempat kalian berangkat. Hal itu karena perjalanan keliling duniaadalah mengeliling bulatan bumi.
B) Mengapa Laut berwarna Biru?
Air laut di dalam gelas tampak bening. Cobalah, kalau tidak percaya. Meskipun begitu, laut sering tampak biru. Hal itu dapat terjadi karena sinar matahari yang menembus ke dalam air jumlahnya sangat banyak. Bukan airnya yang biru, melainkan cahaya yang terhalang oleh air. Kadang, laut juga tampak hijau, merah atau berwarna-warni. Warna itu berasal dari binatang kecil dan gannggang yang jumlahnya tidak bisa dihitung. Biasanya binatang kecil itu disebut plankton. Akan tetapi, warna itu hanya tampak samar. Di daerah muara sungai besar, air sering terlihat abu-abu atau coklat. Warna itu berasal dari pasir dan lumpur yang terbawa arus sungai.
IN ENGLISH (with google translate Indonesian-english):
Where the end of the sea? Why is sea blue?
(source: Rosda Group.1994. Encyclopedia of Marine and Ocean.Jakarta: PT Rosda Jayaputra.)
A) Where the end of the sea?
Previously, people think our Earth is flat like a plate. Therefore, no one dared to climb aboard far. They fear will see the gaping abyssat the end of the sea. How terrible if to fall into it. Now, everyoneknows that the earth is round. Across the seas and oceans and the sea there is another country. If you explore the rows of the State,one day you will arrive back at the place you left. That's becausetraveling around duniaadalah surround the globe.
B) Why is sea blue color?
Sea water in the glass looks clear. Try it, if you do not believe. Even so, the sea often looks blue. It may happen because sunlightpenetrates into the water is numerous. Not the turquoise waters, but the light is blocked by water. Sometimes, the sea also looks green, red or colorful. The color comes from small animals and gannggangthat can not be counted. Usually small animals called plankton.However, the color just looks sketchy. In the area of the mouth of the river, the water often looks gray or brown. The color comes from thesand and silt carried by the river current.
(source: Rosda Group.1994. Encyclopedia of Marine and Ocean.Jakarta: PT Rosda Jayaputra.)
A) Where the end of the sea?
Previously, people think our Earth is flat like a plate. Therefore, no one dared to climb aboard far. They fear will see the gaping abyssat the end of the sea. How terrible if to fall into it. Now, everyoneknows that the earth is round. Across the seas and oceans and the sea there is another country. If you explore the rows of the State,one day you will arrive back at the place you left. That's becausetraveling around duniaadalah surround the globe.
B) Why is sea blue color?
Sea water in the glass looks clear. Try it, if you do not believe. Even so, the sea often looks blue. It may happen because sunlightpenetrates into the water is numerous. Not the turquoise waters, but the light is blocked by water. Sometimes, the sea also looks green, red or colorful. The color comes from small animals and gannggangthat can not be counted. Usually small animals called plankton.However, the color just looks sketchy. In the area of the mouth of the river, the water often looks gray or brown. The color comes from thesand and silt carried by the river current.
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