Geology and Earth Structure

The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick and makes up a whopping 84% of Earth's total volume.

Earth's inner core is the innermost geologic layer of the Earth. It is primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 20% of the Earth's radius or 70% of the Moon's radius.

Global observations show that the crustal thickness varies through the tectonic regions. While the continental crust is 30–70 km thick, the oceanic crustal thickness is 6–12 km. 

Seismic waves move through the Earth as the result of earthquakes.

The layer below the Earth's crust is known as mantle. This consists of magma.

The Earth's crust is not a huge single piece rather it is in many pieces or fragments. The fragments are called plates.

Earth's plates or tectonic plates are always in motion. They continuously move and sometimes collide with each other.

The lithosphere is the rigid outer part of the Earth, consisting of the crust and upper mantle.

Lakshadweep Island group is lying close to the Malabar coast of Kerala in the Arabian Sea. It is also known as the Coral Islands. Earlier it was known as Laccadive Minicoyand Amindive. In 1973 these were renamed as Lakshadweep. It covers a small area of 32  sq. Km. Kavaratti Island is the administrative headquarters of Lakshadweep. Pitti island has a bird sanctuary.

Plate tectonics is the scientific theory describing the large-scale motion of the plates making up Earth's lithosphere, which explains continental drift.

Reddish color of the Mars is due to the presence of "ferric" iron in the from of Red hematite $({ Fe } _{ 2 }{ O } _{ 3 })$ which is the oxide of iron.

Diastrophism refers to the large-scale deformation of the Earth's crust, which includes processes like the folding and faulting that lead to the formation of mountains.

The lithosphere is the rigid, outermost shell of the Earth. It includes the crust and the uppermost part of the mantle, making it the most solid and rigid layer.

Topography is a field of geoscience and planetary science comprising the study of surface shape and features of the Earth and other observable astronomical objects including planets, moons, and asteroids. 

The lithosphere is defined as the rigid outer layer of the Earth, consisting of the crust and the uppermost solid part of the mantle. It is distinct from the deeper, more fluid layers like the core.