You are hungry, and want to boil noodles to make spaghetti. You put a pot of water on the stove and turn on the heat. Ten minutes later, the water is still not boiling, What property of water are you observing?

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.