Because the light-colored earth is a poor radiator, and gives off but little heat to the snow.
Why does the air feel cold in winter time?
Because it is so much cooler than our bodies that it absorbs heat from them rapidly, and thus makes them feel cold.
Why does the air feel warm in summer time?
Because it is then nearly as warm as our bodies, and, therefore, absorbs heat from them slowly.
Why are greasy shoes warmer than those polished with blacking?
Because the greasy shoes absorb heat from the sun, but the polished shoes throw off the heat of the sun by reflection.
What may we remember about heat?
And God said, Let there be light; and there was light. But along with the light, came its companion—heat; for when the sunbeam first came forth at His command, the twin sisters, light and heat, together touched the earth, causing it to bloom with life and beauty. And the earth brought forth grass, the herb yielded its seed, and the tree its fruit: And God saw that it was all good.
