Horvath et al.
e20200160-15
entiation. Volatile elements, rocky planets and gas gi-
ants.Late heavy bombardment.Diffusion of heavy ele-
ments.The formation of the Moon.Independent evidence
for the planetesimal buildup.
Make some questions for the contents of the next class:
What is the Earth’s structure and composition? How
does it relate to the elements?
8.5. Class 5
Start by the questions made in the end of the last class.
After this, explanation about the contents:
Earth’s structure and composition. The solid Earth,
the geosphere, the hydrosphere, the atmosphere and the
biosphere.The magnetic field and biological life.Earth’s
dynamics.
9. Conclusions
We have motivated in this work the need of an interdis-
ciplinary approach of one of the big questions in con-
temporary science: that of the origin of the elements
in the Periodic Table, their cosmological/astrophysical
production sites and their role in the formation of the
Solar System and the planets, with emphasis on the
Earth’s case. It is remarkable that for the first time as-
tronomers have identified directly events (neutron star
mergers) which complement the formation of lanthanide
and actinide groups, even though the exact fractions will
be subject to examination. We believe there are good
reasons to expect that such an integrated, Cosmogeo-
chemistry view to produce a significant impact on the
way several isolated disciplines are seen. A separate and
specific problem would be to prepare teachers exposed to
this interdisciplinary view, even if how exactly to achieve
this goal is out of the scope of the present work. All in
all, the attempts to present these contents as a whole,
interwoven pack will be visible for the students quite
clearly, helping them to act in their contemporary world.
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