Suppose the Earth\'s rotational axis is adjusted by a superpower alien as follow

Question

Suppose the Earth's rotational axis is adjusted by a superpower alien as follows, on which part on the Earth we can see (the center of) the Sun at Zenith and which part we can see (the center of) the Sun remains above the horizon for more than 24 hours?

i) Rotational axis makes 40º with the orbital axis

ii) Rotational axis makes 0º with the orbital axis

iii) Rotational axis makes 90º with the orbital axis

iv) Rotational axis makes 55º with the orbital axis

v) Rotational axis makes an angle with the orbital axis

Explanation / Answer

Answer:

As we know current rotational axis is about 23.5 degree with orbital axis of earth, that is why we have different seasons.

Part i) if rotational axis makes angle 40 degree , then earth tilt more towards sun and zenith would be realises at sub tropical regions. And horizon at tropical regions.

Part ii) if it becomes zero degree then zenith would realise at equator. And at poles it become on horizon for more than 24 hours.

Part iii) if angles becomes 90 degree, then zenith would realise at poles and horizon at equator.

Part iv) if angle become 55 degree, then zenith realise at sub polar regions and horizon at tropical regions.

Part v) if angle become theta, then position of zenith and horizon depend upon value of theta.

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