Final answer:
The sky's blue color is due to Rayleigh scattering, not the reflection of oceans. Sunlight is scattered by air molecules, with blue light being scattered more, making the sky appear blue.
Step-by-step explanation:
The idea that the sky is blue due to the reflection of the oceans on the atmosphere is false. The true reason the sky appears blue is because of a phenomenon called Rayleigh scattering. As sunlight enters the Earth's atmosphere, it collides with the air molecules which scatter the sunlight in all directions.
Because blue light waves are shorter than other colors within the visible spectrum, they are scattered more efficiently by these small molecules. This scattering causes the sky to look blue during the day. At sunset, the light has to travel through more of the atmosphere and the red and yellow wavelengths are scattered, giving the sky its beautiful orange and reddish hues.