Question

hottest to coldest Earth's layers

Answer 1

Hey Mate here is your answer

core hottest layer
mantle
outer core
inner core

I hope it will help you

Answer 2

Hottest layers:

CRUST.

MANTLE.

OUTER CORE.

Inner core.

Coldest explanation

I don't think there's such thing as a cold layer, But here's what I picked up:

As the mesosphere extends upward above the stratosphere, temperatures decrease. The coldest parts of our atmosphere are located in this layer and can reach –90°C. In the forth layer from Earth's surface, the thermosphere, the air is thin, meaning that there are far fewer air molecules.