Question

Read the following passage and make note.

About 2,500 million years ago (according to present theories), the earth on which we
live was a ball of gas which, on cooling, grew smaller and became liquid. The liquid
to cool, giving off some of its heat by radiation and when liquids grow colder
they solidified. The crust of the earth is the solid matter that resulted from this cooling,
mot more
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but probably inside the earth there is still a mass of molten material which has not
cooled as much as the outer crust.
The crust on which we live and from which we obtain almost everything that we need
is not quite rigid. The volcanoes of Etna and Stromboli in the Italian islands remind us
from time to time of the force and heat below the ground. Various places on the carth are
subject to earthquakes, the country that has suffered most from these being Japan. The
study of carthquakes, the science of scimology, has shown that the origin of many of
them is under the bottom of the sea and near the coast of a continent or large island. In
an earthquake, the surface of the land may move suddenly in any direction, bringing
houses down, changing a straight railway-track into a useless zigzag, altering the course
of rivers, changing the shape of bills, and sometimes causing an immense sea wave to
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rush on to the nearest shore and leading to immense destruction. This tidal wave, as it is
called, is wrongly named because it has nothing to do with the ride.

Answer 1

Answer:

• 2,500 years ago earth was a ball of gas.
• Later that gas cooled down, and turned into liquid.
• The crust of the earth is a solid matter, which was result of few gasses which cooled down due to heat of radiations of the sun.
• The inside crust of the earth still has molten material in the form of lava which is not cooled.
• The crust of the surface of the earth is not rigid though we live on grow on it.
• The heat and force from under, the surface is earth is erupted in the form of Volcanic eruption time to time from Etna and Stromboli islands from Italy.
• Other form of release of energy from earths inner crust is Earthquakes in Japan, etc.

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