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KM Grade 7 Science Quiz Book

In this chapter you learnt about the Earth, its Solar System, and the galaxy beyond.

You have understood:

  • The different gasses that make up the Earth’s atmosphere
  • What causes the change from day to night, and from one season to the next
  • Solar and lunar eclipses – what they are, when they take place, and why
  • Why the moon appears to change shape over the course of a month
  • The Big Bang theory of how the Earth began
  • What makes up outer space, from stars and their constellations, to the Milky Way, to the mysteries of black holes