Oceanography, also called marine science, is the study of oceans. It includes the study of physical oceanography, marine chemistry, marine geology, and marine biology. Areas covered in oceanography are the shape, depth, and distribution of oceans, and also their composition, life forms, ecology, and water currents, as well as their legal status. If you would like to know more or share your knowledge about oceanography, ask and answer questions here! Includes questions related to the study of Earth's oceans and seas.

6,870 Questions
Weight and Mass

How much does sea water weigh per cubic foot?

The weight of sea water really depends on a number of variables, including the temperature, the amount of salt (salinity) and whatever other foreign items may be present, and the depth, thus the pressure. But to get to the basic answer, seawater, at the surface, on average weighs 1027 kg/m3, or just over 64.1 lbs per cubic foot.


The question is another way of asking for density of salt water. Salt water has greater density than that of fresh water, due to the dissolved salt. Fresh water has a density of 1000 kg/cubic meter vs. an average density of 1027 kg/cubic meter for ocean salt water.

Example Sentences

How do you use model in a sentence?

There are different ways to use model in a sentence.

For science class we have to model a rocket.

I love being a model.

She likes to draw a model of a scooter.

He likes to draw a model of a car.

Math and Arithmetic

What is mathematics in oceanography?

In oceanography, you would use mathematics in determining depth of ocean, position on the ocean, salinity and temperature of the water, speed of ocean currents, and so on.

Yes, & it can be extremely complex maths too. "And so on" would include for example wave behaviour, sediment transport & deposition, current vectors not just just speeds, tidal calculations...

There are virtually no areas of the natural sciences that do not use mathematics, often to very advanced levels. Even botany & zoology would use areas like statistics.

Oceans and Seas

A wetland that contains a mixture of fresh water and salt water is called?

A mixture of fresh water and salt water is called brackish water. A wetland containing brackish water is called a brackish marsh.

Pangaea Supercontinent

What is the Pangaea puzzle?

The Pangea puzzle is the theory of the beginning of the continents. It's how the Earth started out. Well it is the theory of how the continents came to be. The legend has it that way back in time, there weren't any continents. There was just one large landmass. Until it started to spread apart. That is when it was no longer just one piece. But there were 7 different landmasses. Over hundreds of thousands of years, those landmasses spread apart into what we know now as our 7 continents.

Math and Arithmetic

What does insular mean?

n·su·lar [in-suh-ler, ins-yuh-]-adjective

1.of or pertaining to an island or islands: insular possessions.

2.dwelling or situated on an island.

3.forming an island: insular rocks.

4.detached; standing alone; isolated.

5.of, pertaining to, or characteristic of islanders.

6.narrow-minded or illiberal; provincial: insular attitudes towardforeigners.

7.Pathology . occurring in or characterized by one or moreisolated spots, patches, or the like.

8.Anatomy . pertaining to an island of cells or tissue, as theislets of Langerhans. inhabitant of an island; islander.

Earth Sciences
Ocean Tides

How does low tide occur?

The gravitational pull between the Moon and the Earth stretches the oceans slightly in an oblong shape, like a pulled water balloon. High tide is under (or directly opposite) the moon, while low tide is when the moon is half an orbit away.


What do giant ocean waves mean in a dream?

Your life is about to be very depressing

Botany or Plant Biology

What is special about seeds that need wind to carry them?

They need to be light enough for the wind to carry them or have adaptations, like the parasol on a dandelion seed or wings on a maple seed, that help them travel by the wind.


What is the name of a person who studies the sea?

A person who studies the sea and the ocean is called an oceanographer.
A person who studies sea animals is a marine biologist.
A person who studies sea plants is a marine botanist.


What is the relationship between salinity and dissolved oxygen levels?

The higher the salinity, the lower the dissolved oxygen concentrations.

Oceans and Seas
Atlantic Ocean

Why the sea is salty?

whale sperm.


Is Gigantism a trait often seen among many animals in the deep ocean waters?

Gigantism (and it's opposite, dwarfism) can occur in any isolated environment. We call it insular gigantism or insular dwarfism (although it doesn't always happen on an island, just in an area that is island like, such as deep underwater and in the middle of the jungle). This is how we think the Pygmies evolved in the middle of the jungle. There is an island called Flores in Indonesia. Here we can find giant rats and other things that are way bigger than their relatives everywhere else. In the past on that island many things were smaller than they should be instead of bigger. We even found remnants of an early humanoid that was much shorter than us but fairly close to our intelligence (according to the size of their Brodmann's area 10). I think we named it homo florenses. So, it turns out that whenever you isolate an ecosystem, everything in that ecosystem may evolve to be smaller or larger.


What happens when freshwater and salt water collide?

It becomes what is know as brackish. An example of brackish water is the Chesapeake Bay, fresh water enters at the top of the bay from the Susquehanna as well as about 100 other streams and rivers. The bay then opens into the Atlantic Ocean. The Chesapeake is tidal, but is also constantly being fed with fresh water.

Pacific Ocean
Atlantic Ocean

How much of the world is made up of ocean water?

The ocean covers 71% of Earth and accounts for 97% of the water.

Ocean Tides

How is neap tide and spring tide alike?

spring tide is when the moon and the sun are aligned and the force of gravity pulls the tides outward on the sides and thinner on top which makes high tides higher and low tides higher while neap tides are when the moon is at a 90 degree angle with the earth and sun and pull more to were low tides are lower and high tides are lower.

Rain and Flooding

What is water-holding site?


Earth Sciences
Ocean Tides

What is the lowest tide called?

That would be the neap tide. It produces the lowest low tide, whereas the highest high tide is called a spring tide.


What is a pycnoline?

The boundry between the surface water and deep water.


We know that warm water stays atop cold water. In fact, the change in temperature is abrupt, not gradual. The warm water layer is almost uniform in temperature. So is the cold water layer below. The dividing interface---pycnoline---is where the temperature changes from warm to cold.

Oceans and Seas
Olympics Water Polo

How much salt is in the earth's oceans?

We have three ways to say this answer.

A link is provided below.

  1. The salt content of the earth's oceans is on the order of about 3.5%, or 35 parts per thousand (35 ppt). The volume of salt is something approaching 14,000,000 cubic kilometers. The number is so large, it is hard to comprehend. Is 1.4 x 1010 kilograms any more comprehensible? Again, those last two numbers are just a ball park upper limit. But gosh, they're big.
  2. There are 11,000,000 cubic miles of salt in the ocean....3.5% of the mass of the entire ocean.
  3. There are about 45 500 000 000 000 000 meters cube of salt in all of the ocean!!
  4. if you lay out all the salt in the ocean it will wrap around the earth one time and be as tall as a 40 story building!

It is assumed that this is based on a volume of ocean water 1,300,000,000 km3

or 310,000,000 cubic miles.

Meteorology and Weather
Global Warming

How do oceans affect climate?

The sun is what drives all weather on Earth but the ocean directs the sun's energy to different parts of the world. Oceans have the ability to absorb, store, and deliver the sun's energy.

Ocean currents carry warmer water from the tropics into colder regions. The heat from that warmer water escapes into the atmosphere as it travels, creating warmer, rainier weather than might otherwise be expected.

Upwellings along the California coast bring cold water up from the bottom of the ocean. This is why beaches along the continental pacific coast never really have warm water (compared to the Atlantic coast) even in summer. Winds carry this ambient temperature onto land which is why the coast of California remains in a range between about 50-75 degrees all year long. Climates that rely on ocean temperatures in coastal regions are considered "Maritime" climates.

The Sierra mountains inland force air up the mountain slope, which results in precipitation and rain shadow on the leeward side of the range. The climate in this area is very hot and dry, resulting in the deserts in the western US. This is considered a "Continental" climate because it is not really affected by the ocean temperature. Continental climates typically have much more drastic temperature changes not only in different seasons, but also diurnally (daily).

Winds are the result of air moving from different areas of high and low pressure. The larger the different in pressure, the stronger the winds become. Winds and ocean currents are responsible for distributing warmer temperatures from the equator to the rest of the world.

The oceans give off heat and coolness and weather the area around it. Also, when this happens, the climate of the area changes


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