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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.

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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.

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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.

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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.

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

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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.

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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.

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Your life is about to be very depressing

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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.

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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.

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

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whale sperm.

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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.

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tides

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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.

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The Cambrian

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

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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.

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marine snow !

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reservoir

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

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ewan

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The boundry between the surface water and deep water.

*boundary

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.

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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