Apakah dasar laut rata? Apakah yang dimaksud dengan arus laut? Berapakah dalamnya laut?/ Is the ocean floor flat? What are ocean currents? What is it the sea? FOR GENERAL GEOGRAPHY
Apakah dasar laut rata? Apakah yang dimaksud dengan arus laut? Berapakah dalamnya laut?
(sumber: Rosda Group.1994. Ensiklopedi Laut dan Samudera. Jakarta: PT Rosda Jayaputra.)
A) Apakah dasar laut rata?
Jika dasar laut dikuras sampai habis, orang bisa berjalan kaki dari pantai sampai ke tengah Samudera Atlantik. Pertama-tama, orang akan melihat hamparan pasir yang luas dan terasa lembut di kaki. Setelah itu, tampaklah daerah miring yang curam dengan ngarai yang dalam. Tiba-tiba perjalanan menjadi semakin sulit karena daerah selanjutnya adalah lembah yang berlapis lumpur. Di mana terdapat gunung berapi yang runcing. Di kejauhan, di cakrawala, tampaklah rangkaian pegunungan yang sangat besar. Di semua samudera ada lembah, ngarai yang dalam, gunung berapi, dan rangkaian pegunungan yang besar. Permukaan laut sama saja dengan permukaan daratan.
B) Apakah yang dimaksud dengan arus laut?
Pada jaman dahulu, para pelaut yang berlayar dengan kapal besar dari Eropa menuju Amerika pernah terdorong oleh arus yang sangat kuat. Mereka menemukan arus teluk yang bergerak maju dengan kecepatan tinggi. Arus itu datang dari Teluk Meksiko, menyeberangi Atlantik dan membawa air hangat dalam jumlah besar ke pantai-pantai di Eropa Barat. Ada juga arus laut yang dingin, seperti arus Labrador. Arus itu datang dari Kutub Utara. Arus ini terjadi oleh angin yang menghangatkan air melalui matahari dan adanya gerakan bumi. Di kedalaman laut juga ada arus seperti itu. Akan tetapi, di sanalah arusnya lebih lambat.
C) Berapakah dalamnya laut?
Jika kalian berjalan dari pantai yang datar kea rah laut, kalian tentu merasakan bahwa daerah yang kalian lalui semakin menurun. Dasar laut memang menurun sedikit demi sedikit, sampai ke dalaman 200 meter. Sesudah itu, dasar laut akan menurun tajam ke sebuah lembah yang dalamnya sekitar 5 kilometer. Masih ada dasar laut yang lebih dalam daripada itu. Di samudera Pasifik, ada sebuah jurang yang dalamnya sekitar 11 kilometer. Gunung tertinggi di dunia saja bisa tenggelam yang menyisakan air setebal 2 kilometer di atas puncaknya. Dengan salah satu kapal selam yang dilengkapi peralatan canggih, manusia pernah masuk ke dalam sana. Lampu sorot kapal itu menemukan binatang langka yang tidak ada ditempat lain.
Is the ocean floor flat? What are ocean currents? What is it the sea?
(Source: Rosda Group.1994. Encyclopedia of Marine and Ocean. Jakarta: PT Rosda Jayaputra.)
A) Is the ocean floor flat?
If the bottom of the sea drained until they run out, people can walk away from the beach up to the middle of the Atlantic Ocean. First of all, people will see a vast expanse of sand and feels soft on the feet.After that, behold, a steep sloping areas with deep gorges.Suddenly the trip becomes increasingly difficult as the next area is a mud-covered valley. Where are the pointy volcano. In the distance, on the horizon, there appeared a very large mountain range. In all the oceans no valleys, deep gorges, volcanoes and large mountain ranges. The sea surface is the same as the surface of the land.
B) What is the ocean currents?
In antiquity, the sailors who sailed with the ship from Europe to America been driven by very strong currents. They found the Gulf Stream moving forward at high speed. Flow comes from the Gulf of Mexico, across the Atlantic and bring the warm water in bulk to the beaches in Western Europe. There is also a cold ocean currents, such as the Labrador current. The stream is coming from the North Pole. This occurs by wind currents that warm water through the sun and the motion of the Earth. In the depths of the sea there is also a flow like that. However, that is where the current is slower.
C) What is it the sea?
If you walk from the flat beach towards the sea, you would feel that the area that you are going through has declined. The seabed is down bit by bit, to the depth of 200 meters. After that, the seabed will decline sharply into a valley it about 5 kilometers. There are still seafloor deeper than that. In the Pacific, there is an abyss that it approximately 11 kilometers. The highest mountain in the world alone could sink the water leaves 2 kilometers thick over the top.With one submarine equipped with advanced equipment, people never enter into it. Spotlights ship finding a rare animal that does not exist elsewhere.
(Source: Rosda Group.1994. Encyclopedia of Marine and Ocean. Jakarta: PT Rosda Jayaputra.)
A) Is the ocean floor flat?
If the bottom of the sea drained until they run out, people can walk away from the beach up to the middle of the Atlantic Ocean. First of all, people will see a vast expanse of sand and feels soft on the feet.After that, behold, a steep sloping areas with deep gorges.Suddenly the trip becomes increasingly difficult as the next area is a mud-covered valley. Where are the pointy volcano. In the distance, on the horizon, there appeared a very large mountain range. In all the oceans no valleys, deep gorges, volcanoes and large mountain ranges. The sea surface is the same as the surface of the land.
B) What is the ocean currents?
In antiquity, the sailors who sailed with the ship from Europe to America been driven by very strong currents. They found the Gulf Stream moving forward at high speed. Flow comes from the Gulf of Mexico, across the Atlantic and bring the warm water in bulk to the beaches in Western Europe. There is also a cold ocean currents, such as the Labrador current. The stream is coming from the North Pole. This occurs by wind currents that warm water through the sun and the motion of the Earth. In the depths of the sea there is also a flow like that. However, that is where the current is slower.
C) What is it the sea?
If you walk from the flat beach towards the sea, you would feel that the area that you are going through has declined. The seabed is down bit by bit, to the depth of 200 meters. After that, the seabed will decline sharply into a valley it about 5 kilometers. There are still seafloor deeper than that. In the Pacific, there is an abyss that it approximately 11 kilometers. The highest mountain in the world alone could sink the water leaves 2 kilometers thick over the top.With one submarine equipped with advanced equipment, people never enter into it. Spotlights ship finding a rare animal that does not exist elsewhere.
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