That's not quite right! The Earth's core isn't shaped like a cylinder. It's more like a sphere, similar to a ball.

Here's a breakdown:

* Inner Core: The very center of the Earth is a solid ball of iron and nickel, incredibly hot (around 5,200° Celsius or 9,392° Fahrenheit).

* Outer Core: Surrounding the inner core is a liquid layer, also composed of iron and nickel, but at a slightly lower temperature.

While it's true that both the inner and outer core have cylindrical properties (because the Earth is essentially a sphere), it's more accurate to say the core is spherical.