Heat and Cold

Have you ever touched a hot surface? It burns. You learned that when you touched the stove, jerked back, and screamed, "OUCH!" At which point, your mother replied, "bet you won't do that again will ya?" Or have you ever gotten ice stuck to your lip or tongue and it starts to "burn?" That hurts too! But the question is: what makes things hot or cold? It's all relative to the atoms, and how fast they're moving, and how close together they are. The faster they move and the farther apart they get, that's hot! The slower they move, and the closer they are, that's cold. Everything has a melting point and freezing point. Take water for example. Water, as we all know, freezes at 32 degrees F, or 0 degrees C, and 273 degrees K. The boiling point of water is 212 degrees F, 100 degrees C, or 373 degrees K. F stands for fereinheit, C stands for Celsius, and K stands for Kelvin. K is used to determine absolute zero. 0 K is when all atoms stop moving. That's at -460 degrees F! Wow, that's cold! Do you realize how the hoter something gets, the less dense it gets? That's due to the loosness of the atoms. It's like a snowball. When you just have snow, it will fall between your fingers. When you mash it together, it becomes hard, and enjoyable to through at people. Look at water. The more dense and cold it is, it's ice. The less dense it becomes, it turns into liquid water, and then water vapor. The same thing can happen to your blood, so don't go getting stuck in a blizzard!