Sunday, July 15, 2012

Hello, my name is Venulda Veiga, I am from Cape Verde Islands, wich are ten islands surrounded by water. I am taking this class because I would like to gain some experience, so I can take it to my country.

Which ways does the water drains in Australia

According to http ://
The water direction draining from a sink, water drains in a downward direction depending on the shape and size of the plughole. It doesn´t always go the same way. The vortex directio is dependent on small local factors, and the slightest impulse  (motion, temperature) makes it unpredictably random.

Group experience:
I went to the bathroom with my group, I put my hands on the drainer and fill the sink with water, after I took my hands of the drainer and we saw the water going counter clockwise.


 As part of our study program, on July 14  our class participated in a coastal field trip around the Boston Harbor, not only to became familiar with its history but to establish connection to nature.
At 01:15pm we gathered near Marriot Long Wharf hotel in a day with clear sky and the temperature around 82 degrees Fahrenheit. At the time we boarded the boat,  the tide was low at the harbor and several types of seaweeds could be seen. Since they were wet, it was an indication that the tide was rising (it changes every six hours and can vary from 9 to 11 feets ).
One of the curious marks of the Boston Harbor is the so called "finger peers" that can be seen from above like a hand in the water. They were built in 17th century to accommodate large ships which trade goods from all over the world thus making Boston one of the richest cities in country.
It was hard to have an idea of the shape of the harbor from where we were,  however from above it can be seen as a curved out shape wich offers great protection from the ocean incursions. In 17th century the Boston Harbor had an extension of 50 miles of natural protected shore line that reached beyond the Custom House.With time, man extended land into the sea thus changing the harbor shape. Many real state near the harbor built where there use to have sea.
As we started our trip we passed near Long Wood and we observerd several rocks covered with different types of seaweeds. Certain areas of Boston such as Charlestown, North End, South Shore an Seaport, wich is under construction, could also be seen. We also had the oportunity to view Castle Island, Long Island, Blue Hills, Deer Island, and Moos Island.
We were explained that twenty five years ago Boston harbor waters were very polluted and a major public investment of 5 billion dollars had to be undertaken to clean and prevent   its  pollution. Seaweege water an residues were dumped directly into the the water. Algaes flourished and consume most of the oxygen from the water thus suffocating other species wich stop growing in these water. By 1965 there were no marine species living in the harbor due to its pollution level.
It was observed by a reasercher that due to DDT dumped in to the harbor waters,  that singing birds feeding from the beaches near the harbor were having difficulty reproducing and no longer sang.
As consequence the Clean Water Act was passed to improve the air and water quality. Part of the project to meet the requirement of the Clean Water Act comprise building efficient sewage treatment plant; reducing industries activities near the harbor, building high smoke stacks and divert traffic underground.
We reached Quincy bay and then returned to Boston Harbor via Logan Airport. When we arrive it was 2:50pm and the tide was high.

No comments: