Why does increasing temperature increases vibration of molecules in conductors so it decreases it’s conductivity while in semi-conductors it increases it’s conductivity and no vibrations occurs in the molecules! ?

Gas will most likely  fill the container 

Your answer is 120miles 

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.