Question

why is sky blue?
why is water wet?​

Answer 1

$\huge\mathfrak\pink{Answer}$

a.) The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller wavelength. These shorter wavelengths correspond to blue hues, hence why when we look at the sky, we see it as blue.

b.) Strong tetrahedral hydrogen bonding, which they then related to their teachers for years afterward whenever the subject of water came, they'd say, “Strong tetrahedral hydrogen bonding!” But that's the correct answer. That's what makes water wet.