Question

What is the earth's thinnest layer?

Answer 1

Hint: The Earth is the third planet from the Sun and the only known celestial object to host and sustain life. Land, which consists of continents and islands, covers around 29.2 percent of the Earth's surface. Water covers the remaining 70.8 percent, primarily in the form of oceans, seas, gulfs, and other salt-water bodies, but also in the form of lakes, rivers, and other freshwater bodies, which together make up the hydrosphere.

Complete answer:
The solid crust on the exterior, the mantle, the outer core, and the inner core are the four major layers of the Earth. The crust is the thinnest layer of the Earth's surface. Oceanic crust is the thinnest portion, whereas continental crust is the thickest. The crust is divided into fifteen tectonic plates that move relative to one another, rather than being one solid layer. Rocks interact with the hydrosphere and, more significantly, the atmosphere in the crust. The Earth's crust is a thin shell that covers the planet's surface and makes up less than 1% of its total volume. It is the uppermost layer of the lithosphere, which also contains the crust and the uppermost section of the mantle. The lithosphere is divided into tectonic plates, which move around and allow heat to escape from the Earth's core into space. The crust sits on top of the mantle, which is a stable structure because the upper mantle is composed of peridotite, which is much denser than the crust. The Mohorovii discontinuity, which is characterised by a difference in seismic velocity, is traditionally used to determine the border between the crust and the mantle.

Note: Earth was created from a disc of dust and gas circling the newly created Sun 4.6 billion years ago. It grew into a planet by accretion, in which planetesimals and other tiny rocky particles collided and stayed together, eventually forming a planet. This process produced a tremendous amount of heat, causing the early Earth to totally melt. Earth began to cool as planetary accretion slowed, creating its earliest crust, known as a primary or primordial crust. Large impacts are thought to have regularly shattered this crust, which was subsequently rebuilt from the magma ocean left behind by the impact. Over the last few billion years, all of Earth's main crust has been destroyed by erosion, collisions, and plate tectonics.