* Earth's core is indeed extremely hot and primarily composed of liquid iron and nickel. This liquid outer core is responsible for generating Earth's magnetic field.
* The mantle, which surrounds the core, is mostly solid rock but behaves like a very viscous fluid over geological timescales. This means it can flow slowly, allowing tectonic plates to move.
* The crust, Earth's outermost layer, is solid rock. It's much thinner than the mantle and consists of various types of rock.
So, while Earth has a liquid core, it's not accurate to say the entire planet is composed of extremely hot liquid metals. The vast majority of Earth's mass is in the solid mantle.
