Question

Q. Consider the following statements regarding revolution and rotation of the planets:

1. All the planets rotate in the same direction in which they revolve.
2. The rotation of planet earth causes daily or diurnal rhythm on plant and animal life.
3. The rotation of planet earth causes the movement of air and water to deflect towards the right in the northern hemisphere and towards the left in the southern hemisphere.
4. Tilt of the planet earth's axis causes different seasons.

Which of the above statements is/are correct?

• A.
  1 and 2 only
• B.
  2 and 4 only
• C.
  2, 3 and 4 only
• D.
  1, 2, 3 and 4

Answer 1

The correct option is C

2, 3 and 4 only
Statement 1 is incorrect - Prograde rotation indicates that the motion of the planet is in the same direction as the Sun’s rotation. Retrograde rotation is in the opposite direction. Most planets in our solar system, including Earth, rotate counter-clockwise or prograde direction, but Venus and Uranus are said to have a retrograde or clockwise rotation around their axes.
Thus Venus and Uranus rotate in the clockwise or retrograde direction while all the other planets rotate in the counter-clockwise motion.

Statements 2, 3 and 4 are correct: The rotation of planet earth causes daily or diurnal rhythm on plant and animal life. The rotation of planet earth causes the movement of air and water to deflect towards the right in the northern hemisphere and towards the left in the southern hemisphere. Tilt of the planet earth's axis causes different seasons.