Day and night. Seasons

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  2. Day and night. Seasons

Contents

  1. Why?
  2. Why are the twilight?
  3. How to know that the Earth – a sphere?
  4. Why there is a change of day and night?
  5. How to prove that the Earth moves?
  6. Why summer is warmer than winter?
  7. Why in summer the sun above the horizon is higher than in winter?
  8. Why there is the annual movement of the Sun among the stars?
  9. How to prove that the Earth moves around the Sun?
  10. Why there is a change of the seasons?
  11. What are the planets and stars?
  12. What is the role of the Earth in the universe?
day-and-night-seasons

Куницкий Р.В. День и ночь. Времена года. – М.: Воен. изд. мин. вооруж. сил ССР, 1947. – 40 с. (Некоторые фрагменты книги устарели)