Eli5 The earth has a magnetic field, including because of the metal core, but magnets are demagnetized at high temperature. How is this possible

Question

Eli5 The earth has a magnetic field, including because of the metal core, but magnets are demagnetized at high temperature. How is this possible

In: 1054

Answer 1

usually magnets are magnetic because the electricity in them go spin, making a magnetic field

these magnets become not magnets when hot because the electricity doesn’t spin together nicely and becomes chaotic

however, for the earth, even though it’s hot, they still spin together nicely because the hot molten rocks under us are spinning as a whole so in the end, you still got electricity spinning roughly together enough to make a magnetic field