Why is the inner core the hottest layer?

Answer 1

Because there is a inner core which is in the middle of the earth and is very hot and a bit like the sun.

btw this tells you nothing

Update:

In part due to radioactive decay of uranium, thorium, potassium-40, etc.; and the insulating effect of the outer layers.

Answer 2

because the earths core is millions and millions times hotter than its crust and the some of the heat is pushed out of the core and it to the rest of the world. that's were magma comes from in volcanos.

Answer 3

The atmosphere and the earth and the oceans all behave the same way with regard to pressure. Imagine a one inch square space on a piece of paper. With nothing on top of it, there is no pressure at all. Now, start adding water on top of the square in a one inch square tube that extends upward. Lets say that when the "height" of the column is one foot, we call the pressure on the original one inch square one atmosphere. As you continue upward with a filled tube, the pressure continues to build up. Imagine the pressure at the bottom of a four mile deep ocean trench. The same theory applies to the earth itself, not just water. Only now...instead of a few miles the "height" of the tube which determines pressure is now thousands of miles thick and the tube is filled with elements heavier than water.....OUCH! Literally, there are millions of atmospheres of pressure at the center of the earth. Increased pressure, means increased temperature. The further you get towards the theoretical center of the earth, the hotter it gets. One interesting note....at the center of the earth, you are weightless....as gravity is pulling you in all directions simultaneously.

Answer 4

Th magma from the mantle is hot. So the farther down you go, it gets hotter.

Answer 5

because in the middle of the earth there is hot Magma. (lava).... so when you go deeper, you're going closer to the magma.

Answer 6

Because of all the pressure on top of it.

Answer 7

The earth has a molten core.