SOLAR SYSTEM

Detailed explanation-1: -iron and nickel. Many scientists infer the composition of the Earth’s core to be similar to the composition of? metallic meteorites.

Detailed explanation-2: -Iron meteorites-principally an iron-nickel alloy. These comprise 10% of all meteorites and they may tell us something about the composition of the core of the earth. Stony-iron meteorites-silicate minerals and nickel-iron alloy in approximately equal amounts.

Detailed explanation-3: -The Field of Geology Geology is a field of study concerned with the structure and dynamics of Earth.

Detailed explanation-4: -Why must scientists infer the composition of Earth’s layers? They cannot gather samples from the layers. What substances must Earth’s core be composed of to create the magnetic field and density needed to match estimates of Earth’s mass?

Detailed explanation-5: -The Core is predominantly composed of iron and nickel. Even after 4.5 billion years of cooling, the Earth’s core remains very hot. The Earth’s core is divided into two layers, a solid inner core, and a liquid outer core. The Inner Core (D) (1216 km) is solid nickle-iron alloy.

Detailed explanation-6: -There are no samples of Earth’s core accessible for direct measurement, as there are for Earth’s mantle. Information about Earth’s core mostly comes from analysis of seismic waves and Earth’s magnetic field. The inner core is believed to be composed of an iron–nickel alloy with some other elements.