Does salinity increase with depth?
Notice also that in many ocean regions, temperature and salinity both decrease with depth. … At very great depth, salinity increases again because the water near the ocean bottom originates from polar regions where it sinks during the winter; freezing during the process increases its salinity.
Do different oceans have different salinity?Variation in salinity
The salinity of the ocean varies from place to place, especially at the surface. Much of the ocean has salinity between 34 ppt and 36 ppt, but there are places that tend to be higher or lower.
What is the measurement and charting of ocean depth called?bathymetry The process of measuring the depths is known as bathymetry . These measurements were first made through soundings , where a weighted line (lead line) was let out by hand until it touched the bottom, and the depth could be recorded from the length of the line (Figure 1.4. 1).
Why are abyssal plains more extensive on the floor of the Atlantic than on the floor of the Pacific?
The Atlantic Ocean has the most extensive abyssal plains because it has few trenches to catch sediment carried down the continental slope. The sediments that make up abyssal plains are carried there by turbidity currents or deposited as a result of suspended sediments settling.
How does the area of Earth’s surface covered by the oceans compare with that of the continents?
How does the area of Earth’s surface covered by the oceans compare with that of the continents? 71% of Earth’s surface is covered by oceans, the other 29% is made up of continents and islands. Contrast the distribution of land and water in the Northern Hemisphere and the Southern Hemisphere.
How does the deepest part of the oceans compare to the tallest part of the land?
The Challenger Deep is 10,994 meters (36,070 feet) below the ocean’s surface. For comparison, Mount Everest, the world’s tallest mountain, is 8,850 meters (29,035 feet) above sea level. Mount Everest could fit inside the Mariana Trench with more than 2 kilometers (1 mile) to spare.
Where are the deepest portions of the world’s oceans found?
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.
How Deep Is the Ocean In Reality?
What is salinity and how is it usually expressed what is the average salinity of seawater?
Salinity of seawater is usually expressed as the grams of salt per kilogram (1000 g) of seawater. On average, about 35 g of salt is present in each 1 kg of seawater, so we say that the average salinity of the ocean salinity is 35 parts per thousand (ppt). Note that 35 ppt is equivalent to 3.5% (parts per hundred).
Which ocean is similar in size and average depth to the Indian ocean?https://www.worldatlas.com/articles/the-oceans-of-the-world-by-size.html Rank Ocean Avg. depth (m) 1 Pacific Ocean 3,970 2 Atlantic Ocean 3,646 3 Indian Ocean 3,741 4 Southern Ocean 3,270
Which ocean is the shallowest ocean in the world?The Arctic Ocean The Arctic Ocean is the shallowest (mean depth 1361 m) and has significantly larger continental shelves than other oceans.
Why does salinity vary in different seas and oceans?
Oceans can vary in salinity by deficiencies/overabundance of fresh water (evaporation/precipitation), as the measure of saltiness is given in the form of a concentration. Salt concentration varies as well because oceans do not stand still. … Search ocean biochemistry for more information.
Why does the Pacific usually have lower salinity than the Atlantic quizlet?
Atlantic, Pacific, Indian, Southern, and Arctic Oceans. Why does the Pacific usually have lower salinity than the Atlantic? Because the Pacific has a greater volume of water to dilute the dissolved solids.
Why are abyssal plains larger and more numerous in the Atlantic Ocean?
Abyssal plains are most common in the Atlantic; in the Pacific, deep trenches around the continents trap most of the sediment before it reaches the open ocean. At depths of thousands of feet, there’s absolutely no light. The water is near freezing, and the pressure is hundreds of times greater than at the surface.
Why does the Atlantic Ocean have the most extensive abyssal plains?
The Atlantic Ocean has the most extensive abyssal plain because there isn’t a Trench to catch the sediment. A convergent plate boundary would be found at a deep ocean Trench. A mid ocean ridge is a divergent boundary.
What is the average salinity of seawater quizlet?
Salinity is the proportion of dissolved salts to pure water, usually expressed in parts per thousand. The average salinity of seawater is 3.5% or 35 parts per thousand.
Does ocean salinity vary?
The concentration of salt in seawater (salinity) varies with temperature, evaporation, and precipitation. Salinity is generally low at the equator and at the poles, and high at mid-latitudes. The average salinity is about 35 parts per thousand.
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How is depth of ocean measured?The most common and fastest way of measuring ocean depth uses sound. … Multibeam echosounders (MBEs), a type of sonar that sends out rapid sound waves in a fanlike formation to scan the bottom of the ocean floor, are used by the National Oceanic and Atmospheric Association (NOAA) to measure the depth of the ocean.
Is the measurement of ocean depths and the charting of the topography of the ocean floor?
Bathymetry is the measurement of ocean depths and the charting of the shape or topography of the ocean floor.
What are black smokers in the ocean?“Black smokers” are chimneys formed from deposits of iron sulfide, which is black. “White smokers” are chimneys formed from deposits of barium, calcium, and silicon, which are white. … Underwater volcanoes at spreading ridges and convergent plate boundaries produce hot springs known as hydrothermal vents. See also how can plants physically weather a rock?
Does the Atlantic or Pacific Ocean have a higher average surface salinity?
The Atlantic Ocean is known to have higher sea surface salinity than the Pacific Ocean at all latitudes. This is thought to be associated with the Atlantic Meridional Overturning Circulation and deep water formation in the high latitude North Atlantic – a phenomenon not present anywhere in the Pacific.
What is the difference between topography and bathymetry?Topographic maps show elevation of landforms above sea level. Bathymetric maps show depths of landforms below sea level. See also how did the geography affect the aztecs
Average Elevation Country Wise
What is the average salinity of seawater?about 35 parts per thousand The concentration of salt in seawater (its salinity) is about 35 parts per thousand; in other words, about 3.5% of the weight of seawater comes from the dissolved salts. In a cubic mile of seawater, the weight of the salt (as sodium chloride) would be about 120 million tons.
How does average depth of the oceans compare?
Terms in this set (27) How does the average depth of the oceans compare to the average elevation of the continents? The ocean floors are about 4 times as deep, on average, than the average elevation of the continents above sea level.
Which ocean is the deepest ocean in the world?Pacific Five deepest points of the world’s oceans Rank Name Ocean 1 Challenger Deep Pacific 2 Brownson Deep Atlantic 3 Factorian Deep Southern 4 (Unnamed deep) Indian
How does salinity vary throughout the world’s oceans?Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.
Where would you most likely go to find black smokers deep sea hydrothermal vents )?Hydrothermal vents in the deep ocean typically form along the mid-ocean ridges, such as the East Pacific Rise and the Mid-Atlantic Ridge. These are locations where two tectonic plates are diverging and new crust is being formed. See also why did factory owners prefer to employ women?
Why does the Atlantic Ocean have higher surface salinity?Of the five ocean basins, the Atlantic Ocean is the saltiest. … Fresh water, in the form of water vapor, moves from the ocean to the atmosphere through evaporation causing the higher salinity. Toward the poles, fresh water from melting ice decreases the surface salinity once again.
How do you calculate the salinity of seawater?
B. Calculate salinity, using the formula: salinity (ppt) = 0.0018066 5 Cl– (mg/L).
Why does the Atlantic Ocean have few ocean trenches compared to the Pacific Ocean?
Why does the Atlantic Ocean have few ocean trenches compared to the Pacific Ocean? The Pacific Ocean has many convergent boundaries. … These are all subduction zones resulting in trenches of varying depths. The Atlantic Ocean has few convergent boundaries and, as a result, few trenches.
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How Does The Average Depth Of The Oceans Compare To The Average Elevation Of The Continents??
How does the average depth of the oceans compare to the average elevation of the continents? The ocean floors are about 4 times as deep, on average, than the average elevation of the continents above sea level.