which statement is correct about the inner core and mantle of the earth?

Question

the mantle is both solid and liquid, while the inner core is entirely solid.
the mantle is entirely solid, while the inner core is entirely liquid.
the mantle is entirely liquid, while the inner core is entirely solid.
the mantle is both solid and liquid, while the inner core is entirely liquid.

Answer 1

The correct statement is: the mantle is both solid and liquid, while the inner core is entirely solid.

The Earth's mantle is composed of solid rock that behaves like a viscous fluid over long periods, allowing for slow convection currents. The inner core, on the other hand, is composed of solid iron and nickel due to the immense pressures found at that depth, despite the high temperatures.