First year of secondary education
The Earth and the Universe
José Luis San Emeterio
 Universe 
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Objectives of this unit
  • To understand in a qualitative way the notion of relative movement, to a sufficient degree to be able to explain the apparent movement of heavenly bodies as a consequence of the earth's rotation and translation.
  • To explain in terms of these same movements the succession of days and nights and the seasons of the year.
  • To know the components of the solar system and some of its most interesting properties.
  • To understand the analogous nature among the sun and other stars, as well as acquiring a notion of its origin, the causes of its energy emission and its probable destiny. 
  • To explian the night sky as a way of seeing our galaxy, the Milky Way.
  • To understand the enormous quantity of galaxies which exist in a universe perceived according to its evolutionary character .
The Earth's movement
Does the Earth move?
Rotation of the planet
Translation. The seasons
Conclusions
The solar system
The sun and the moon
The planets
The rest of the solar system
Conclusions
The sun and the stars
What are fixed stars?
Life and death of the stars
Conclusions
The known universe
The Milky Way
Other galaxies
Conclusions
Evaluation