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The Earth

The Earth is a planet. It rotates on its axis, revolves around the Sun and moves with the Sun through space. The Earth gets its warm and light from the Sun. All around the Earth is atmosphere. We breathe it, and it gives us our weather. The terrestrial globe revolves on its axis for 24 hours. When the terrestrial globe faces to the Sun, we can see sunlight and we have day. When terrestrial globe turns away from the Sun’s light, we have night. The average speed revolution of the Earth round the Sun is 29,8 kilometres per second. The small eccentricity the orbit of the Earth does the little difference in its speed, but there is the difference in the length of the seasons because of the variation. The number of days between the beginning of spring and of autumn, in the northern hemisphere is 186, but the number of the days between the beginning of autumn and the beginning of spring is 179.

The Earth takes 365 ½ days to travel around the Sun. This makes our year. As the Earth travels around, first one pole then the other is tilted toward the Sun. When the North Pole tilts toward the Sun, the rays of the Sun fall straighter down on the Northern half of the world. It is warmer and it has its summer (June, July and August). It also has longer days, because it turns to the Sun more of the time. When the South Pole is towards the Sun, the southern half of the world is warmer, and it has its summer (December, January and February). Then the northern half is getting less direct sunshine, because it tilts away from the Sun. It has shorter days. It has winter. The seasons between them we call spring and autumn. (A. Kovalenko)



Вопросы

  1. What is the Earth?

  2. How fast is the Earth?

  3. When do we have night and day?

  4. How fast does the Earth travel around the Sun?

  5. What seasons does the Earth have?

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