earths inner core?

Question

can some bpdy tell me what s the measure of earths inner core

Answer 1

The inner core has a radius of about 1,220 km (about 800 miles). Temperatures are estimated to reach from 5,000 to 6,000 °C (>9,000 °F) and pressures range from 330 to 360 GPa (over 3,000,000 atm).

Answer 2

Gravity does decrease towards the centre of the earth, but if you think about the many many kilometres of material being pulled in towards the centre of the earth, it doesn't matter that there is no gravity at the centre. Think of it like a stack of pillows. the first pillow (being the core) if filled with feathers and the top pillow (being the crust) is filled with a car. The weight of the car pushing down on the lower pillows is a bit like gravity pulling materials towards the centre of the earth. So although gravity at the centre of the earth is 0 there is still sufficient pressure to make the core solid. The layers below the crust are liquid because there is not as much pressure as the core, so the heat caused by the pressure, rather than compacting the material simply causes it to melt.

Answer 3

Earth layers, from surface:
0–60km, 0–37miles: Lithosphere (locally varies between 5 and 200 km)
0–35km, 0–22miles ... Crust (locally varies between 5 and 70 km)
35–60km, 22–37miles ... Uppermost part of mantle
35–2890km, 22–1790miles: Mantle
100–200km, 62–125miles ... Asthenosphere
2890–5100km, 1790–3160miles: Outer core
5100–6378km, 3160–3954miles: Inner core
So, inner core radius: 6378 - 5100 = 1278km...

Answer 4

I would measure it in miles. Possibly meters.