Reflection on Research(Gracia)

 

From the research, I've learnt that seawater is actually alkaline, with a pH of 8. Also, I learnt that the activities along the beach could affect the seawater. At C, there was a strong fish smell because the seawater was from the left side of the jetty. It is dirtier and thus, probably has a more fishy smell. The points with less rubbish spotted were also not cloudy as the ones with lots of rubbish. I feel that the seaweed washed-up on shore was because of the waves. The water at B, the control, showed that it was the cleanest as there were no human activities there.
In photographs taken, the alkalinity of the seawater showed that part of break walls and rocks were corroded as seen in colour differences. Also, when the experiment was conducted, I learnt that unfiltered seawater has more impurities in it as compared to when it is filtered. This can be told from the time taken to boil and evaporate the pure water in the seawater until salt is left.
After the experiment, it can be concluded that the cleaner the seawater is, the more salt crystals it can form and that the cleaner the water, the less salt is formed.
In other photographs, breakwalls show the growth of algae. This is also a prove that seawater is alkaline because alkaline components in seawater like nitrate and phosphate encourages the growth of algae on areas that frequently come into contact with water.
In conclusion, I learnt that seawater at East coast Beach is polluted and is alkaline.