Unpredictable, Powerful, Horrible disaster.
"A swarm of snakes! I don't know how many…. There is too many!!"
This was a notified call in China. Many people call the 911 because of a sudden
appeared herd of snakes. Scientists and media gave attention to this phenomenon,
Chinese were afraid about this bode ill. They worried about the Baekdu mountain.
Actually, there were few signs of eruption. Many scientists concerned about eruption
of the Baekdu mountain could be horrible disaster. Like this, active of a volcano can
cause huge damages. Then, what is the cause of volcano eruption and what kind of
damages can be exist?
First, we have to know about cause of volcano eruption. Inside of the earth is
very hot. The mantle, just below the crust of the earth, can melt irons and rock.
Temperature of the mantle is over 1000 degrees. Volcano is erupted by this hot
mantle. Mantle makes 'Lava' by melting some rocks and part of crust. Lava
contains lots of gas so it is lighter than crust and has property of rise. For this
reason, lava melts crust and climbs up steady. Finally, when lava comes up a lot
and crust is not enough to bear pressure, land splits and volcano erupts. This is
a volcano eruption
During these phenomenons happen, some signs are appeared. First thing
is earthquake. Moving of lava cause frequent earthquakes. Earthquakes occur
more often by lava moves closer with surface of crust, so it cause second sign
of eruption, rockslide. Then, land billows and temperature of surface comes up.
Usually many plants and animals die and lots of steam is appeared because of
heat. Last, when eruption approaches, water at the top of volcano is boiled
and volcanic gas is spurted out.
After erupting, people have to be carful about somethings. They are magma,
volcanic gas and pyroclastic materials. Volcanic gas will attack first. It contains
some bad substances like carbon dioxide, sulfur. So it can suffocate many
people. Volcanic gas also contains lots of steam and causes heavy rain. Next
things are pyroclastic materials. These are burning rocks and stones that poped
up by high pressure. Speed of these is over 300km/h and temperature is about
700 degree. People can get burn though they stay away from these and some
of these explode when they fall down. Last thing is magma. Magma is hot liquid
so it burns everything by flowing on land.
Many people are worrying about destructive force of volcano eruption.
Besides, many scientists predict that scale of eruption Baekdu mountain will be
over 10 times in Island volcano eruption. Of course, we can't estimate time and
scale of eruption exactly, but some signs are observed. So we have to take our
eyes on it and prepare for unpredictable happens.
200503311 Chang-Min Ji said....
ReplyDelete1. It has useful information.
2. Main point is to give information on possibility of Baekdu mountain's eruption.
3. I think body paragraph is powerful. It has very useful and specific information. And three paragraph consist of good structure.
4.In first paragraph, There is a sentence ; Many scientists concerned about eruption of the Baekdu mountain could be horrible disaster.
I think the sentence has to ve corrected to 'Many scientists concerned about eruption that the Baekdu mountain could be a horrible disaster.'
5.I don't find what a point is the essay has to improve.
200904082 Park Jin-kyung
ReplyDelete1.It is all clear and understandable.
2. The main point seems to be the why and how the volcano erupts and why it is dangerous.
3. I really like the very first part of your essay as it gives me very strong impression.
4. "During these phenomenons happen, some signs are appeared." should be " While these phenomenon happen, some signs appear."
5. Your writing is not just focused on the process of volcanic eruption, I mean, you made the theme a little wider. But, I think this is well written.