KNOW OUR OCEANS | SEADAN
THE OCEAN BEFORE YOU DIVE
-THE OCEANS AND THEIR SIGNIFICANCE
-BIOLOGICALLY REACH OCEANS
-LAYERS OF THE OCEAN
-OCEANS IMPACT ON THE CLIMET -COMPOSITION OF OCEAN WATER
-VERTICAL AND HORIZONTAL DIVISION
THE OCEANS AND THEIR SIGNIFICANCE
OCEANS IMPACT ON THE CLIMET
Earth would not be the same planet without its oceans. The oceans, along with the atmosphere, keep Earth’s surface temperatures fairly constant worldwide. Some places on Earth reach as cold as −7 degrees Celsius, whereas other places reach as hot as 55 degrees Celsius. Yet on other planets like Mercury, temperatures range from −180 degrees Celsius to 430 degrees Celsius.The oceans, along with the atmosphere, distribute heat around the planet. The oceans absorb heat near the equator and then transport that solar energy to polar regions. The oceans also moderate climate within a region. At the same latitude, the temperature range is smaller along coastal areas compared to areas farther inland. Along coastal areas, summer temperatures are not as hot, and winter temperatures are not as cold, because water takes a long time to heat up or cool down.
BIOLOGICALLY REACH OCEANS
​Water is a polar molecule so it can dissolve many substances such as salts, sugars, acids, bases, and organic molecules. Where does the salt in seawater come from? As water moves through rock and soil on land it picks up ions. This is the flip side of weathering. Salts comprise about 3.5 percent of the mass of ocean water, but the salt content or salinity is different in different locations.In places like estuaries, seawater mixes with fresh water, causing salinity to be much lower than average. Where there is lots of evaporation but little circulation of water, salinity can be much higher.
The Dead Sea has 30 percent salinity nearly nine times the average salinity of ocean water. It is called the Dead Sea because nearly nothing can survive within it because of its salinity.
HORIZONTAL DIVISION​
Waves and Ocean Currents will be published in next article on15th Sep 2020