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b)Elliptical
c)Spherical
d)Zig zag

28 Complete the table: U 19 1
SEASON DURATION OF DAY NIGHT
----------------- Day short night long
Summer season ----------------

29 Cycle of season is caused due to: U 19 1
a)Gravitation
b)Rotation
c)Revolution
d)Illumination

30 Which statement about Earth's rotation and its revolution is U 19 1
correct?
a. It a) It takes Earth longer to rotate on its axis than revolve around
the Sun.
b. It b) It takes Earth longer revolve around the Sun than to rotate on
its axis.
c. It c) It takes Earth longer to rotate around the Sun than revolve on
its axis.
d. d)I d)It takes Earth longer to revolve around the Sun than to revolve
on its axis.

31 Which sentence best describes how the planets revolve? U 19 1

a. T a) The planets of our solar system are moving in space.
b. E b) Each planet goes around the Sun in a path called an orbit.
c. In c) In addition, each planet spins around an imaginary line through
its center called an axis.
d. E d)Earth's axis is tilted at an angle of about 24.4°

LEAP YEAR,ELLIPTICAL ORBIT
32 The shape of Earth‟s orbit is – K 19 1

a)Circular b)triangular c)elliptical d)diagonal

33 Leap year repeated after _____. U 19 1
[A] 3 Year
[B] 2 Year