Layers of the earth

• The mantle is the layer of the Earth between the crust and the core, composed of solid rock that is capable of flowing over long periods of time.
• The outer core consists mostly of molten iron and nickel.
• The lithosphere is the rigid outermost shell of the Earth, comprising the crust and uppermost portion of the mantle.
• The inner core is the densest region within the Earth, located at its center and believed to be primarily made up of iron and nickel.
• The asthenosphere is the lower part of the lithosphere where rocks can flow slowly under pressure.
• The lithosphere is the rigid outermost part of the Earth's interior consisting of the crust and uppermost mantle.
• Seismic waves are vibrations generated by earthquakes or explosions that travel through the Earth's interior.
• The asthenosphere is a relatively weak layer of the Earth's mantle beneath the lithosphere.
• Crust: The outermost layer of the Earth, covered with soil, rock, and water, thickest under continents and thinnest under oceans, thickness ranges from 5 to 64km, state: solid.
• Mantle: Earth's thickest layer, extends from the base of the crust to the liquid outer core, about 80% of the Earth's volume, thickness: 2,900km, state: considered solid but has plasticity.
• Outer Core: Mostly molten, iron and nickel, acts like a hot liquid, thickness: about 2,250km, state: molten liquid.
• S-waves (secondary waves) are transverse waves that cannot pass through liquids and have different speeds depending on their direction.
• The crust is divided into two main types: oceanic crust and continental crust.
• The crust is the thinnest and most brittle layer of the Earth, with an average thickness of about 35 km but ranging from less than 10 km beneath ocean basins to more than 70 km beneath continents.
• The inner core is made up of solid iron and nickel.
• Layers of the Earth: Crust, Mantle, Outer Core, Inner Core