Penitentes

Penitentes :

One of the wonderful natural phenomenon occurring in the world

They are snow formations, occurring naturally, at very high altitudes. The snow formations are in the shape of thin and tall blades of hard ice or snow rising upwards towards the sun. Penitentes are usually formed in clusters and can vary in height anywhere from six to ten feet high.

Where can you see Penitentes?

      

Penitentes form all over the ice covered regions in Dry Andes situated above 4,000 m. Penitentes are a common sight in the regions between Argentina and Chile. The first mention of the word Penitentes is found in Darwin’s writings in 1839. He mentions how on 22 March 1835 when he was traveling to the Argentian City, Mendoza, from Santiago de Chile,he witnessed the snowfields filled with Penitentes just near the Piuquenes Pass. The locals believed the Penitentes to be the result of the strong winds prevalent in the Andes Mountains.

            The longest Andes mountain ranges, located at a height of 4000 meters, abound with forests of towering Penitentes. The Andes extends over a length of 7000km along the west of South America and include the Andean countries of Venezuela, Ecuador, Argentina, Peru, Chile, and Bolivia. The Penitentes when small resemble grasslands and when they occur in clusters of towering heights, they resemble white forests of ice. The snow formation is such that they seem to be an assembly of ice monks congregating to pray to the sun with folded hand and lost in devotion.

How are Penitentes formed?

            Scientists have done a lot of research on the formation of this natural phenomenon of ice towers. Liboutry is one of the scientists who has done much study in this area and has concluded that Penitentes are a result of differential ablation. (where snow gets evaporated).On high altitude glaciers due to the dry air, the sun rays do not necessarily melt the ice but instead can change the ice into water vapor directly through what is called theprocess of Sublimation. Some areas may sublimate more speedily than others which may result in random depressions on the smooth surface of the snow. Sunlight gets concentrated on these curved surfaces speeding up the process of sublimation in these areas resulting in the higher spikes of ice formations called the penitents.

 

            Recently scientists have argued that the presence of carbon or any other impurities lead to some absorption of sunlight and the resultant occurrence of Penitentes. If this theory is to be believed, then the glaciers could be saved from the onslaught of global warming. There are counter arguments to this claim that if the Penitentes absorb more sunlight due to the presence of carbon, they may also result in the destruction of the icebergs. Studies are being pursued in this field to discover the effect of global warming on the formation of Penitentes.

Source :

http://www.innovateus.net/content/what-are-penitentes

Gerund

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Student Counsil

           Hello everyone, I will introduce my self to all of you. My name is Amelia Herlambang from Eleven Science Three. I’m one of the candidates who wants to lead this school as a chairman of the student council. When I was nominated as the chairman of the student council, I feel very proud, because I have been given credence by all my friends. 

             I want to move to this school over the events educate and foster creativity and talents of all students. I am ready if I selected later to become student council by friends and also ready to move events, which could advance the Sman 3 Bandung.

          Of course that all need the support from the teachers and students from Sman 3 Bandung. Being student council actually considered to move our organization as a form of our concern over the progress of this school. That’s all from me, once again don’t forget to select me on council progress in Sman 3 Bandung.

If Conditional

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