Earth motion all questions solve below .
Exercise:
(1) Answer the following questions-
a) At what degree angle the axis of the earth is inclined?
Ans: The earth's polar pole is angled 661/2° degree with the orbitals.
b) How long does the earth take to complete one revolution around the sun?
Ans: The earth takes 365 days 6 hours to complete one revolution around the sun.
(c) What is circle of illumination?
Ans: The earth rotating on its axis from east to west then the half part of earth face to face sun where light and other parts remains dark.An imaginary circle divides the earth into two parts of the light and the non-falling parts. This Circle is called illumination Circle.
(d) On which dates of the year sun rays fall vertically on the equator?
Ans: On June 21 and December 22 of the year sun rays fall vertically on the equator
(2) Give a brief answer to the following questions-
(a) What do you mean by rotation and revolution?
Ans: The earth rotates on its axis, so it is called rotation. On the other hand, the earth round his own orbit it's calls revolution.
b) How do the days and nights occur due to rotation?
c) What is a Leap Year?
d) Differentiate between the summer and winter solstices.
e) What may happen had there been no revolution of earth?
(3) Tick () to correct answer:
a) Name the motion of the earth that revolves around the sun.
(i) rotation (ii) axis (iii) revolution
Ans: 3) revolution.
b) On which date sun rays fall vertically on equator:
(i) 21 March (ii) 21 June (iii) 22 December
Ans:
c) Change of season occurs on the earth due to-
(i) revolution (ii) rotation (iii) none of these
) In a Leap Year total no of days is- d
(i) 365
days (ii) 366 days (iii) 3651/2 days
e) Winter solstices occur on
(i)
23 September (ii) 21 March (iii)
polished
(4) Fill up the blanks:
a) The rotation of the earth on nits axis from west t it is called-
b) The path along which the earth moves around the sun is called-
c) The shortest day occur during- -season.
d) The imaginary line joining the north pole with the south pole is called-
1) The earth is
its axis at an angle of
Assam
22 December
degree.
e) The Winter Solstices circle has been imagined in- hemisphere.