All About Ocean

1. Provide a thorough description of the contents of ocean water and how its composition compares with fresh water.

The earth is made up of mostly water of about 71%, this is why the planet earth is sometimes called the blue planet (4).   Of all the water, ocean water is 97% and fresh water is only 3% (4).   Ocean water is also called seawater or salt water (2).   Ocean water is made up of 3.5% salts, or 35 parts per thousand (2). Ocean water in different part of the earth have different salt content, for example in the mouth of a rivers it has 20 parts/thousand (2).   Red Sea has a salt that is 42 parts/thousand (2). Ocean water in most places on the earth is normally about 35 parts/thousand every day (2). The saltier the water, the denser the water is (2).

The salt in the salt water is mostly composed of 9 ions (2).   The ions include, sodium (Na), Magnesium (Mg), Calcium (Ca), Potassium (K), Chlorine (Cl), and Sulphate (SO4) (2). Out of all the ions, there are a lot of Sodium and Chlorine, this means a lot of NaCl (2).   NaCl is what we call salt, the salt that we eat, salt that we add to our food to have taste.   There are also other salts made from the 9 ions, and all of these salts are in the ocean water (2).  

Ocean water and fresh water is similar that the chemical structure is the same (5).   They both made up of hydrogen atoms and oxygen atoms (5).   The chemical formula is H2O (5).   Another similarity is that they both have salt but have different amount.   The sea water can have 3.5 %, can be more and can be less (4).   The fresh water have very low salt of about 0.5% salt (4).
The difference between seawater and fresh water are:   Because the seawater is saltier, it is thicker and denser than fresh water (3). The seawater freezing point is lower than fresh water.   The freezing point of seawater is -2.6 degrees Celsius or 28.4 degrees Fahrenheit (4). The freezing point of fresh water is 0 degrees Celsius or 32 degrees Fahrenheit.   The boing point of...