Science says the Earth"s Crust is 30 miles deep;Then Molten Magma.How does this fire get its air source?,We were taught
at the Position I had ,by Fireman that it takes Oxygen-Fuel-Heat source to start and maintain Fire,Thus my Question.
2007-03-21 07:32:41 · 2 answers · asked by section hand 6 in Science & Mathematics ➔ Earth Sciences & Geology
Magma is defined at "molten rock", so calling it "molten magma" is redundant. Magma is either upwelling from the mantle and pouring out onto the surface of the Earth or it is generated in the crust. Regardless, the source of heat is from radioactive decay of (essentially) three radioactive elements; uranium, thorium and potassium. Uranium and thorium produce much more heat than potassium does, but there is so much more potassium in rocks that it makes up for it to become one of the three.
By the way, you were taught heating by burning, but that is not the only way to heat something up. Think of how you cook a turkey (for instance) in an oven. It cooks by infrared radiation heating the turkey till it is cooked. No burning is involved.
2007-03-21 12:31:42 · answer #1 · answered by Amphibolite 7 · 0⤊ 0⤋
Magma is not on fire. It is molten rock, emaning is has melted either through super hot temperatures or super dense pressures.
2007-03-21 07:38:22 · answer #2 · answered by Anonymous · 2⤊ 0⤋