What would happen if earths core collapsed in on itself

Hello :)

My first hypothesis: If the Earth's core were to collapse on itself the pressure and heat would cause the core to cool and eventually the Earth would cool off and not be able to sustain life.

My second hypothesis: The earth would explode

Due to the unique nature of this question, I wasn't quite sure what the answer was, so I gave two hypotheses. Hope these give some insight :)

Aself-report inventory  is a type of  psychological test  used in personality assessment. this type of test is often presented in a paper-and-pencil format or may even be administered on a computer. a typical self-report inventory presents a number of questions or statements that may or may not describe certain qualities or characteristics of the test subject.