The internal structure of Earth is a
A) core of solid rock extensively enriched in iron, surrounded by a solid mantle of pure rock.
B) large, solid iron core surrounded by a thick, flexible mantle of rock.
C) core of rock and iron, surrounded by a mantle of liquid hydrogen.
D) large core of iron, partly solid and partly molten, surrounded by a thick, flexible mantle of rock.

Question

Quizplus · Accepted Answer

The Earth's internal structure consists of a large core made of iron, which is partly solid (inner core) and partly molten (outer core), surrounded by a thick, flexible mantle composed of rock. This structure supports the geophysical evidence and explains phenomena such as seismic wave propagation and the Earth's magnetic field.

The Internal Structure of Earth Is a