Chemical and Physical Layers of the Earth

Study Notes

Physical Layers of the Earth

Composed of five primary layers: lithosphere, asthenosphere, mesosphere, outer core, and inner core.
Lithosphere: Rigid outer layer, includes the crust and upper mantle.
Asthenosphere: Located beneath the lithosphere, features low resistance to flow, allowing for convection currents.
Mesosphere: Stronger, lower layer of the mantle, situated between the asthenosphere and outer core.
Outer core: Molten layer composed mainly of iron and nickel, lies above the inner core.
Inner core: Dense, solid sphere made primarily of iron and nickel, located at Earth's center.

Chemical Layers of the Earth

Three main layers: crust, mantle, and core.
Crust: Thin, solid outermost layer covering the Earth, sits above the mantle.
Mantle: Thick layer of hot, solid rock situated between the crust and core, involved in convection currents.
Core: Central part of Earth, located beneath the mantle, consists of the outer molten core and inner solid core.

Atmosphere

Composed of a mixture of gases enveloping Earth or other celestial bodies.

Hydrosphere

Encompasses all of Earth's water, with approximately 97% residing in oceans.

Geosphere

Mainly solid, rocky component of Earth, extending from the inner core to the crust surface.

Convection Currents

Result from the movement of heated fluid rising and cooled fluid sinking, driving plate tectonics and mantle dynamics.

Earth's Magnetic Field

Generated by the molten outer core, creating lines of magnetic force that behave like a giant magnet, affecting navigation and animal migration.

Description

Explore the fundamental concepts of Earth's chemical and physical layers through these flashcards. Learn about the lithosphere, asthenosphere, and atmospheric components as well as the composition of the hydrosphere. This quiz serves as an intriguing study tool for Earth Science enthusiasts.