Jawaban:

31. Explain that sun call a star?

answer : the sun is called a star because the sun can produce its own light

32. Mention the center of the solar system?

answer : the center of the solar system is the sun

33. How many planets are there in the solar system? Mention it?

answer : there are eight planets in this solar system which are mercury, venus, earth, mars, jupiter, saturn, uranus, and neptune

34. Mention the differences between rotation and revolution?

answer : Rotation is the rotating motion of an object on its own axis. Revolution is the orbital motion of objects around other objects