The lava from a volcano ranges in temperature from 570 to 2,120 degrees Fahrenheit. In comparison, water boils at 212 F, and a pizza oven is generally 500 to 600 F.
Orange or yellow lava is the hottest and has a temperature over 1,600 F. As lava cools, it turns red and is around 1,165 F. Eventually, the lava solidifies into rock. Lava is made mostly of silicon and oxygen, with small amounts of other elements such as aluminum, calcium, magnesium, sodium and potassium. The largest volcano in the world, Mauna Loa, and another very active volcano, Kilauea, are both on Hawaiian islands.