Question

What causes different colors to appear in the sky?

the absorption of light by air molecules
the reflection of light by bodies of water
the greenhouse effect in Earth’s atmosphere
the scattering and reflection of light by dust particles

Answers

GPT-4o mini
The different colors that appear in the sky are primarily caused by the scattering and reflection of light by air molecules and particles in the atmosphere. This phenomenon is known as Rayleigh scattering, which explains why we see a blue sky during the day; shorter wavelengths of light (blue and violet) scatter more than longer wavelengths (red and orange).

When the sun is lower in the sky, such as during sunrise or sunset, the light has to travel through more of the Earth's atmosphere, scattering the shorter wavelengths even more and allowing the longer wavelengths (reds and oranges) to dominate the colors we see.

While other factors like the reflection of light by bodies of water or dust particles can influence sky color, the primary cause of the varying colors in the sky is the scattering of light by air molecules in the atmosphere. Therefore, the most accurate answer to your question would be the scattering and reflection of light by dust particles.

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