The sky appears blue because when sunlight enters Earth's atmosphere, the shorter wavelengths of blue light are scattered more readily by air molecules than longer wavelengths, causing the blue light to be dispersed throughout the sky, making it the dominant color we see; this process is called Rayleigh scattering » Continue Reading
Lemonade is called lemonade because it is a drink primarily made with lemons, and the suffix "-ade" is commonly used to describe a beverage made from a specific fruit, like "lemon-ade" in this case; essentially, the name directly reflects its main ingredient - lemons. » Continue Reading
Pennies smell "funny" because the odor you perceive isn't actually coming from the copper metal itself, but from a chemical reaction between the natural oils on your skin and the metal when you touch it; essentially, the smell is a result of your body odor interacting with the copper surface, not the coin itself having an inherent smell. » Continue Reading