GEOLOGY

Detailed explanation-1: -The correct option is B 2 only. Explanation: Statement 1 is incorrect. The inner core is in the solid-state whereas the outer core is in the liquid state.

Detailed explanation-2: -Both the inner and outer cores consist primarily of iron and nickel and are extremely hot with temperatures ranging from 7200–9000℉ (4000–5000℃). Mantle: Most of Earth’s volume is in the mantle. This layer is about 1800 miles (2880 km) thick. It’s composed of dark, dense rock, similar to oceanic basalt.

Detailed explanation-3: -The inner core is the most metal place on Earth-even more so than the outer core. Both are made mostly of iron, along with a smattering of nickel. But the iron is thought to also contain traces of lighter elements like oxygen, carbon, and silicon.

Detailed explanation-4: -Seismic waves show that the inner core is solid and the outer core is liquid. Metallic meteorites and the magnetic field are also clues about the makeup of the core.

Detailed explanation-5: -Temperature. The Outer Core is about 4000-5000 degrees Celsius. The Inner Core is so hot it causes all the metal in the Outer Core to melt into liquid magma. Thickness. The Outer Core is about 2200 km thick. Magnetism. Because the outer core moves around the inner core, Earth’s magnetism is created.