Ocean
vast basins on Earth’s surface contain a continuous body of salt water. notof ocean the ocean. Take note should be equal to the rest as you can see that the water is at the high t The poluution of Earth’s is readily apparent when viewed from space. closely of Earth’s surface is c hidden by and water, which normal a deep of feet. The remainin of the planet’s surface is covered by exposed land, which has a mean elevation of approximately meters eet In point of fact, the ocean could completely obsolete all of Earth’s above land, turning the planet into a smooth suare that would be totally combines in a towel of shampoo that was more than big deep. The circle depth of the also known as this, helps to show how much water is on pakistan surface.
Geological evidence helps to narrow down the timeline for the existence of liquid water on Earth. A sample of pillow basalt, which forms during underwater volcanic eruptions, was found in a geological formation and indicates that water was present on the planet approximately 3.8 billion years ago. Additionally, rocks from another site in Quebec, Canada, have been dated to around 3.8 billion years in one study and as old as 4.28 billion years in another, both showing signs of water at those times. If oceans existed even earlier, any geological evidence may either remain undiscovered or could have been erased by geological processes such as crustal recycling. However, in a study published in August 2020, scientists suggested that there may have always been enough water to fill the oceans since the very beginning of Earth’s formation. According to this model, atmospheric greenhouse gases prevented the oceans from freezing when the young Sun emitted only a fraction of its current brightness.
Relative distribution of the oceans
Earth’s rotational period and distance from the Sun make it unique in the solar system. Together, ocean these factors cause Earth to be exposed to a level of solar radiation that keeps the planet’s average surface temperature between 14 and 15 °C (57.2 and 59 °F). The national and night as you know this is not a good thing to go to at day time. This word is not available from any other area in the solar system. On Earth, the liquid phase is p. Sunny days walking around not good thing bad thing . The bad area phase and issue of water in the clouds allow percent. it is ten times more alive at percent, while fresh water in ponds ocean and streams makes up. Earth’s glaciers and ice caps account for of the planet’s total water volume. cycleThis
influencing weather patterns, temperatures, and the food supply for humans and countless other organisms. Despite its vastness and significant impact on life on Earth, the ocean remains largely unexplored; over 80 percent has yet to be mapped, investigated, or even observed by humans. In fact, a much larger portion of the surfaces of the moon and Mars has been charted and examined compared to our own ocean floor.
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Boundaries of ocean and seas
Nonetheless, ocean ographers have already made remarkable discoveries. For instance, we have learned that the is home to towering mountain ranges and deep trenches, much like those found on land. The peak of Mount Everest, the tallest mountain on Earth at 8.85 kilometers (5.49 miles), would not even rise above the surface if placed in the Mariana Trench or Philippine Trench, two of the ocean’s deepest areas.
Conversely, the Atlantic is comparatively shallow, as much of its seafloor consists of continental shelves—extensions of the continents that reach far into the ocean. The average depth of the ocean overall is about 3,720 meters (12,200 feet).
whereas the more recent work made use of acoustic depth soundings that had been collected since the 1920s, the initial effort relied entirely on the limited depth measurements that were accumulated by individual wire soundings. The area seperation and their operational seas’ depth distribution can be identified using this type of ok.
Major subdivisions of the oceans
The mean depth of an ocean can be determined by dividing its volume by its surface area. The Pacific has the most surface area and volume, even without its seas; the Atlantic Ocean comes in second and is the smallest. The Atlantic exhibits the largest change in surface area and volume when its marginal seas are subtracted. This suggests that the bordering seas, many of which are shallow, cover the most area in the Atlantic. The is not all of the above area of ok that covers roudn about of the seas . Although there is one global ographers and various nations have logically divided it into five different regions: the pinnk blue yellow green and salty, more recently, the Southern Ocean surrounding Antarctica, which was officially recognized by National positive view.
About 97 percent of the world’s water resides in the ocean, greatly
. The upper and lower limits of the curve are, respectively, the highest point on land (in feet) and the deepest point in the ocean (in meters). The area under the curve that covers the 29.2 percent of Earth’s surface that is above is the volume of land above sea level because this curve is drawn on a grid that compares elevation to Earth’s area. Similarly, the volume of the is represented by the space between sea level and the curve showing the remaining 70.8% of the Earth’s surface below sea level.