name different layer of earth and write short note on each layer

 curst mantle and core

Crust is the outermost solid shell of a rocky planet, which is chemically distinct from the underlying mantle. The crusts of our Earth and other planetary bodies have been generated largely by igneous processes.

Mantle is a part of a terrestrial planet or other rocky body large enough to have differentiation by density. The interior of the Earth is chemically divided into layers. The mantle is a highly viscous layer between the crust and the outer core. Earth's mantle is a rocky shell about 2,900 km (1,800 mi) thick that constitutes about 84% of Earth's volume.

Outer core of the Earth is a liquid layer about 2,266 km (1,408 mi) thick composed of iron ans nickel which lies above the Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath the Earth's surface. The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath the Earth's surface.

Inner core of the Earth, is the innermost part, detected by seismological studies, is a primarily solid ball about 1,220 km (760 mi) in radius, or about 70% that of the Moon. It is believed to consist of an iron–nickel alloy, and may have a temperature similar to the Sun's surface, approximately 5700 K (5430 °C).