Overview
Surf's up! Get the current information as Bill Nye explains why oceans are salty and explores the ocean currents. Go with the flow of ocean currents with Bill Nye the Science Guy. Most of the Earth is covered with water - we're talking 71% of the entire Earth, and most of that water is in oceans. It depends how you count, but you can say that there are five oceans on Earth - the Atlantic, the Pacific, the Indian, the Arctic, and the Antarctic. They are all connected into one World Ocean by the flow of ocean currents. Ocean water is moving around all the time. Some of the moving water forms rivers in the ocean. Oceanographers, scientists who study oceans, call these rivers of ocean water "currents". Currents help sea animals move around, they bring up deep ocean water with lots of nutrients for small animals to eat, and they push warm and cold water around, creating different climates in the oceans. As the sea surface gets warmed by the Sun, water evaporates, but salt stays in the sea.
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2 - 1Magnetism February 18, 1994 -
2 - 2Wind February 25, 1994 -
2 - 3Blood & Circulation March 04, 1994 -
2 - 4Chemical Reactions March 11, 1994 -
2 - 5Static Electricity March 18, 1994 -
2 - 6Food Web March 25, 1994 -
2 - 7Light Optics September 10, 1994 -
2 - 8Bones & Muscles September 17, 1994 -
2 - 9Oceanography September 24, 1994 -
2 - 10Heat October 01, 1994 -
2 - 11Insects October 08, 1994 -
2 - 12Balance October 15, 1994 -
2 - 13The Sun October 22, 1994 -
2 - 14Brain October 29, 1994 -
2 - 15Forests November 05, 1994 -
2 - 16Communication November 12, 1994 -
2 - 17Momentum November 19, 1994 -
2 - 18Reptiles November 26, 1994 -
2 - 19Atmosphere December 03, 1994 -
2 - 20Respiration January 07, 1995