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Category: Internal Structure of Earth

Brief introduction to Earth

Earth is the third planet from the sun and is the largest of the terrestrial planets in the Solar System in terms of diameter, mass and density. It is also referred to as the World, the Blue Planet and Terra. Home to millions of species including humans, Earth is the only place in the universe

Composition and Structure of Earth

Composition and structure of Earth  Earth is a terrestrial planet, meaning that it is rocky body, rather than a gas giant like Jupiter. It is the largest of the four solar terrestrial planets, both in terms of it size and mass. Of these four planets planets, Earth has the highest density, the highest surface gravity

Internal Structure of Earth

The interior of the earth, similar to other terrestrial planets, is chemically divided into layers. The Earth has an outer silicate solid crust, a highly viscous mantel, a liquid outer core that is much less viscous than the mantel, and a solid inner core. Many of the rocks now making up the Earth’s crust formed

Earth’s Internal Layers

The Earth has a layered structure, including the core, mantle and crust. The crust and upper mantle are cracked into large pieces called tectonic plates. These plates move slowly, but can cause earthquakes and volcanoes where they meet. The Earth’s atmosphere has changed over billions of years, but for the past 200 million years it has been much as

The Earth’s Internal Layered Structure:

01. Crust: The outermost part of the earth, this is what we walk around on is made of cold, brittle and relatively light material. The crust ranges from 5 to 70 km in depth. Under t he continents the crust averages about 30-40 km thick (more under tall mountains, somewhat less in other areas) and

Evidence of Earth’s Layered Structure

Evidence that support the concept of a layered structure of the earth comes from several sources.  First, rock samples taken from great depths do have higher concentrations of Iron and Magnesium in them than average crustal rocs. And second, when the mass and size of the Earth are measured, the resulting density figure is 5.5

Evolution of Earth’s Atmosphere:

The early atmosphere Scientists believe that the Earth was formed about 4.5 billion years ago. Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth’s existence. The early atmosphere was probably mostly carbon dioxide, with little

Earth as a system.

The Earth system is a complex functioning system that includes all the components of the various ”spheres” like the solid Earth or geosphere,  the gaseous envelope surrounding the Earth that is the atmosphere, biosphere comprised of all living organisms and the hydrosphere is ”water sphere”. The Earth system diagram shows arrows representing flows of energy