▶ Your Answer :
According to reading passage, the author
argues that Carolina Bays was created by the meteorite impacts by giving three
explanations. On the other hand, the lecturer brings up several points to
contradict this argument.
First of all, the speaker asserts that the
oval shape does not prove the site which was mainly caused by meteorite
impacts. This is because it appears the opposite effect. When the meteorite is striking
the Earth, the shape of geological formations is almost circular shape just
like the explosion of bomb. This casts doubt on the reading passage’s claim
that the oval shape is triggered by the meteorite strike.
Also, the lecture claims that the magnetic
data gathered at the Bays is not reliable data. The research conducted in the
1930s, the technology of device was primitive. Nowadays, The researchers has
conducted the measurement of magnetic field using modern device. They found a
huge difference of data between 1930s and current. Compared to the first data,
they concluded that 1930s’ device was malfunctioned or inaccurate. This refutes
the reading passage’s claim that magnetic abnormality is the evidence of
meteorite impacts.
The final point made by lecturer is that
there is no clear evidence that the presence of nano-diamond is another
implication of meteorites explosion. The nano-diamond is caused by a wide
variety of sources such as cosmic dust, rain, and flame. This contradicts the
reading passage’s claim that the nano-diamond is the important indications of
meteorite impacts. |