What are the main organs of the alimentary canal? accessory organs of the digestive system.
There are five major gyres: the North Atlantic, the South Atlantic, the North Pacific, the South Pacific and the Indian Ocean Gyre, see figure 1. The Antarctic Circumpolar Current is situated in the Southern Ocean and constantly circles around Antarctica because there are no land masses to interrupt the currents.
Currents, The North Equatorial Current, the Gulf Stream, the North Atlantic Current, and the Canary Current.
There are two main types of ocean currents: surface currents and deep ocean currents.
The two basic types of currents – surface and deep-water currents – help define the character and flow of ocean waters across the planet.
More modernly, the seven seas have been used to describe regions of the five oceans—the Arctic, North Atlantic, South Atlantic, North Pacific, South Pacific, Indian, and Southern Oceans.
The Seven Seas include the Arctic, North Atlantic, South Atlantic, North Pacific, South Pacific, Indian, and Southern oceans. The exact origin of the phrase ‘Seven Seas’ is uncertain, although there are references in ancient literature that date back thousands of years.
(vi) What are ocean currents? Answer: The streams of water flowing constantly on the ocean surface in a definite direction are called ocean currents. The ocean currents may be warm or cold.
An ocean current is a continuous, directed movement of sea water generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences.
There are two types of currents, surface currents and deep water currents, that dictate how and where water will move.
The Arctic Ocean is the smallest of the world’s five ocean basins. A polar bear walks on the frozen surface of the Arctic Ocean. The freezing environment provides a home for a diverse range of creatures. With an area of about 6.1 million square miles , the Arctic Ocean is about 1.5 times as big as the United States.
The Pacific Ocean is the largest and deepest of the world ocean basins. Covering approximately 63 million square miles and containing more than half of the free water on Earth, the Pacific is by far the largest of the world’s ocean basins.
The Red Sea is an inlet of the Indian Ocean between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb sound and the Gulf of Aden. In the north are the Sinai Peninsula, the Gulf of Aqaba or the Gulf of Eilat and the Gulf of Suez (leading to the Suez Canal).
The Black Sea is located at the southeastern extremity of Europe. It is bordered by Ukraine to the north, Russia to the northeast, Georgia to the east, Turkey to the south, and Bulgaria and Romania to the west.
The Red Sea’s name is a direct translation of its ancient Greek name, Erythra Thalassa. … A popular hypotheses about the origins of the Red Sea’s name is that it contains a cyanobacteria called Trichodesmium erythraeum, which turns the normally blue-green water a reddish-brown.
Of the five ocean basins, the Atlantic Ocean is the saltiest. On average, there is a distinct decrease of salinity near the equator and at both poles, although for different reasons.
Think of cold currents as currents moving toward the Equator. These waters are colder than the water they are moving into. … You would be swimming into a current colder than the surrounding water — thus a cold current. A warm current is just the reverse. A warm current is moving away from the Equator toward the poles.
Ocean circulation derives its energy at the sea surface from two sources that define two circulation types: (1) wind-driven circulation forced by wind stress on the sea surface, inducing a momentum exchange, and (2) thermohaline circulation driven by the variations in water density imposed at the sea surface by …
Cold ocean currents are large masses of cold water that move towards the equator, from a level of high altitude to lower levels. They absorb the heat they receive in the tropics, thereby cooling the air above them.
Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. Currents are cohesive streams of seawater that circulate through the ocean.
- Direct Current: (DC)
- Alternative Current (AC)
- Electric Current | Types of Electric Current | AC Current, DC Current.
The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam. Challenger Deep is approximately 36,200 feet deep.
There is only one global ocean. Historically, there are four named oceans: the Atlantic, Pacific, Indian, and Arctic. However, most countries – including the United States – now recognize the Southern (Antarctic) as the fifth ocean. The Pacific, Atlantic, and Indian are the most commonly known.
Atlantic OceanMax. depthPuerto Rico Trench 8,376 m (27,480 ft)Water volume310,410,900 km3 (74,471,500 cu mi)
Dead SeaPrimary outflowsNoneCatchment area41,650 km2 (16,080 sq mi)Basin countriesIsrael, Jordan, and PalestineMax. length50 km (31 mi) (northern basin only)
The waters of the Pacific Ocean comprise the world’s largest heat reservoir, by far, and it is the warmest ocean, overall, of the world’s five oceans.
The Indian Ocean is the smallest, geologically youngest, and physically most complex of the world’s three major oceans (the others being the Pacific and Atlantic). Although it first opened some 140 million years ago, almost all of the Indian Ocean basin is less than 80 million years old.
The Dead Sea is a large lake that borders Israel, Jordan, and the West Bank. It has the lowest land elevation on Earth, sitting 422 meters (1,385 feet) below sea level. The white “foam” that collects on the shores of the Dead Sea is actually salt.
Yellow Sea, Chinese Huang Hai, Korean Hwanghae, large inlet of the western Pacific Ocean lying between mainland China on the west and north and the Korean peninsula on the east.
The Black Sea is home to world’s biggest, most productive spiny dogfish sharks, but this remarkable, global species is in danger of extinction. CITES action is needed to curb unsustainable trade … before it’s too late. What is a spiny dogfish?
With rivers providing an abundant supply of fresh water, the upper layers of the Black Sea are less dense than its saltier lower layers. A permanent boundary between the two prevents any vertical mixing. The oxygen, derived from the atmosphere and photosynthesis, remains restricted to these surface waters.
If you don’t know about floating and the Black Sea – it is a salt lake whose banks are more than 400m below sea level, the lowest point on dry land. … You cannot float in the Black Sea.