Question

Which of these best explains why Earth’s inner core is solid?

Answer 1

Answer: I believe the answer is high pressure due to other layers forces the particles to stay close together. It can’t be the first option because no pressure would let them act as they want to. It can’t be the third option because heat will cause the particles to move much more than they would in cold temperature. It could be the last option since cold keeps particles still but the temperature inside the earth is quite hot so the inner core wouldn’t be cold. I hope this helps!

Explanation: lmk if I’m right ((:

Answer 2

the temperature at which a phase change takes place depends on pressure. For instance because there is more pressure at low altitudes than at high altitudes, water boils at less than 100 degrees Celsius at high altitudes like mount Everest. In general, the higher the pressure, the higher the melting and boiling points are. Therefore potentially the melting point of iron-nickel alloys is significantly greater in the Earth's core than on the Earth's surface due to an enormous pressure within the Eaerth's core.