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What is the average radius of the Earth?

A. 6071km

B. 6571km

C. 6371km

D. 6771 km

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  1. The study of universe on grand scale is called.
  2. Arrange the Inner Planets in decreasing order of their distances from the Sun.1. Earth2. Mercury3. Venus4.…
  3. Which planet is called 'red planet'?
  4. Polar circumference of the Earth is
  5. Polar Auroras are called __ in Southern Hemisphere.
  6. Which of the following is not an astronomical object?
  7. Who was the first person to describe the earth as a sphere?
  8. The visible surface of the sun is known as
  9. Relatively cool spots of the Sun are called __ while relatively hot spots of the Sun are called __.
  10. What does perigee mean?
  11. Distance between the Moon and the Earth is 1. Approximately 386000 km2. 1.25 light seconds
  12. What is a 'synodic month'?
  13. What is significant about the town of Greenwich?
  14. Polar diameter of the Eearth is.
  15. Which of the following is 'the cruel planet' in Indian astrology?
  16. Lunar eclipse means
  17. Polar Auroras are
  18. What is the geographical term for land's end, that tip of land which projects into the sea?
  19. The Sun contains over ___of the total mass of the Solar System.
  20. How much time does the earth take in completing one rotation on its axis in relation to sun?
  21. From west to east, what are the three main island groups in the Pacific called?
  22. A celestial body consisting of a gaseous cloud enveloping a bright nucleus moving around the Sun in…
  23. The name of our galaxy is _______
  24. How many satellites does the largest planet have?
  25. Which of the following conditions la the most relevant for the presence of life on Mars?
  26. What is the unit of measurement of distance between celestial bodies?
  27. What part of the moon's surface can be visible from the earth?
  28. What is the difference between a lake and a tank?
  29. Charon' is the satellite of _____.
  30. A leap year consists of