1. Sun falls both on a pair of reading glasses and a dark pair of sunglasses. Which pair would you expect to become warmer? defend you anser. At first it reminded me of the white car, black car type question. But then I realised sunglasses are meant to block UV ray, etc. and are usually polarized. So would that mean that the reading glasses would become warmer as they have nothing to 'block' the heat from the sun or would it be the darker sunglasses because they absorb and filter the UV rays and heat???