Winter Is Coming

Classical Mechanics Level 1

Why do we have seasons on Earth?

Select the most appropriate reason.

Image Credit: Total Choir Resources
The varying distance of the Earth from the Sun due to Earth's elliptical orbit Global warming Variations in the Sun's activity and appearance over time The tilt of Earth's axis of rotation, relative to the Earth's plane of orbit

Pranshu Gaba by Pranshu Gaba , 22, India

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2 solutions

Out of all the options, the tilt of the Earth's axis suits the most as an answer. See, due to the 23 1 2 ∘ {23\frac{1}{2}}^{\circ} tilt of our planet, some part of Earth receives more sunlight as compared to the part on the opposite side.

This causes an increase in temperature that finally causes various degrees of changes, like flow of winds and other factors that alter the seasons.

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I think all of us know that if the magnitude of the ray's angle from 90° is bigger, then the temperature will be lower. But the Earth has a 23° tilt. Therefore sometimes the magnitude of the angles will be lower, and sometimes it will be bigger.

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