a dip or depression in the surface of the land or ocean floor. Explore the process of erosion with this collection of resources. Define river basin. A confluence – where a river joins another river. long period of cold climate where glaciers cover large parts of the Earth. ... For each of numbers 1-8 identify which part of the river/drainage basin it shows. What is called “Maloca”? In physical erosion, the rock breaks down but its chemical composition remains the same, such as during a landslide or bioerosion, when plants take root and crack rocks. Diane Boudreau A geological basin is a large low-lying area. These streams, ponds, wetlands, and lakes are part of a river basin. mouth of a river where the river's current meets the sea's tide. 1145 17th Street NW The Ring of Fire touches Alaska, the Americas, New Zealand, and eastern Asia. The Great Floods of 2000 molten rock, or magma, that erupts from volcanoes or fissures in the Earth's surface. All rights reserved. stream that feeds, or flows, into a larger stream. A river basin is the portion of land drained by a river and its tributaries. Landforms - Upper Course A river drainage basin is an area where rivers and their tributaries are drained. Answer: Drainage Question 2. Many smaller basins are often considered oceanic basins, such as the North Aleutian Basin, between the Pacific and Arctic Oceans.Tectonic activity constantly changes ocean basins. Unintentionally, 1m3s-1 is equivalent to 1 cumec, so the discharge of a river is regularly estimated in cumecs because it is somewhat simpler to state. The river basin drains a total land area of 795,000 km 2 and has a mean annual discharge of 475 km 3, the tenth largest in the world. A river’s water can fluctuate over time. Understanding the hydrological cycle is useful in order to understand how and why the amount of water fluctuates. The ridge of high land which surrounds a river. It is also the oldest basin; researchers say its rocks are 200 million years old. Video. The land area that is drained by a river and its tributaries. Ocean basins that have mid-ocean ridges are expanding. A river basin sends all the water that falls within it to a central river, and from there to the ocean. Edges of the continents, called continental shelves, form the sides of ocean basins.There are five major ocean basins, coordinating with the major oceans of the world: the Pacific basin, the Atlantic basin, the Indian basin, the Arctic basin, and the Southern basin. watershed that empties into an internal body of water, not the ocean. person who studies space and the universe beyond Earth's atmosphere. google_ad_client = "pub-7990220078266560"; Turkana Basin, in Kenya, whose basin includes the Omo River of Ethiopia. google_ad_width = 160; part of a continent that extends underwater to the deep-ocean floor. A basin is a depression, or dip, in the Earth’s surface. Seafloor spreading happens along the boundaries of tectonic plates that are moving apart from each other. Q9. material, such as earth, sand, and gravel, transported by a glacier. Melissa McDaniel For example, the total area drained by the Mississippi River constitutes its drainage basin, whereas that part of the Mississippi River drained by the Ohio River is the Ohio’s drainage basin. River basins have typical features, these include: Tributaries - smaller rivers flowing into a larger river. There are two main types of erosion: chemical and physical. A river basin is the area of land over which surface run-off flows via streams, rivers, and lakes into the sea. Every stream and tributary has its own watershed, which drains to a larger stream or wetland. The Amazon River and all of its tributaries drain an area more than 7 million square kilometers (about 3 million square miles). They mainly grow tapioca, pineapple and sweet potato. Why are the forests thick and dense in the region? Few instruments can endure the intense pressure, cold, and dark at the bottom of ocean basins. | Meaning, pronunciation, translations and examples A river basin is an area of land drained by a river and its tributaries. Drainage basin, also called catchment area, or (in North America) watershed, area from which all precipitation flows to a single stream or set of streams. Differing in size and shape, watersheds can encompass a small stream or span thousands of miles like the Mississippi River watershed. Ocean basins that experience subduction, such as the Pacific basin, are shrinking.Even though ocean basins make up more than 70 percent of the total land on Earth, scientists know relatively little about them. Geography and geology. A river drainage basin is an area drained by a river and all of its tributaries. Geography. You cannot download interactives. The Dead Sea is one of the saltiest natural body of water on Earth. It is a tributary of the Red River. Also called glacial age. google_ad_client = "pub-7990220078266560"; The final destination is than an estuary which eventually carries it … And, it carries the largest volume of water to the s… The Mekong River flows from Tibet to China, walking the borders between Burma and China, Burma and Laos, and Thailand and Laos, and travels through Cambodia and Vietnam discharging into the South China Sea. Ans. They mainly grow tapioca, pineapple and sweet potato. The water draining into Death Valley from its few streams does not exit the basin to a river or estuary. Gas molecules are in constant, random motion. The remains of the diatoms were at the bottom of these basins. Kara West. In these subduction zones, the heavier plate moves underneath, or subducts, the lighter one. The Mekong River Basin includes seven broad regions with diverse topography, drainage patterns and geomorphology. remains of something broken or destroyed; waste, or garbage. 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