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The Earth is a. planet. and is roughly the shape of a. sphere. There are three layers that make up the Earth’s structure. The three layers, starting from the outside, are: the crust – the ...
- Inner Core. Temperature: 5,000°C – 6,000°C. State: Solid. Composition: iron and nickel. The Earth’s inner core is a huge metal ball, 2,500km wide. Made mainly of iron, the temperature of the ball is 5,000°C to 6,000°C – that’s up to 6,000 times hotter than our atmosphere and scorching enough to make metal melt!
- Outer Core. Temperature: 4,000°C – 6,000°C. State: Liquid. Composition: iron, nickel, sulphur and oxygen. This liquid layer of iron and nickel is 5,150km deep.
- Lower Mantle. Temperature: 3,000°C. State: solid. Composition: iron, oxygen, silicon, magnesium and aluminium. The lower mantle is found between 670km and 2,890km below the surface, and is made from solid rock.
- Upper Mantle. Temperature: 1,400°C – 3,000°C. State: liquid / solid. Composition: iron, oxygen, silicon, magnesium and aluminium. This layer is up to 670km below the Earth’s surface.
- The Crust
- The Mantle
- The CORE
The crust is the outer layer of the Earth. It is the thinnest layer of the earth compared to the other layers. Its thickness varies from 5 kilometers in the ocean floor to about 70 kilometers on the land surface. The crust is subdivided into huge plates that float into the next layer of the earth (mantle). The plates are constantly moving but at a ...
The mantle is under the crust and is approximately 2,890 kilometers deep. It is by far the thickest layers and accounts for 85% of the volume of the Earth. The layer can be divided into upper and lower mantles. The great pressure on the lower mantle makes it completely solid while the upper mantle, also known as the asthenosphere, is liquid and flo...
The Earth’s core is divided into inner and outer cores. Both cores are mainly made up of iron and nickel. The difference between the inner core and the outer core is that the mineral in the inner core is solid while those in the outer core are liquid. The inner core is as hot as the sun but because of the pressure from the weight of the earth pushi...
- John Misachi
Crust and Lithosphere. Mantle. Core. Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth’s mass. Finally, the core is mostly iron metal.
Dec 8, 2023 · It is the innermost layer surrounding the earth’s centre. The core is separated from the mantle by Guttenberg’s Discontinuity. It is composed mainly of iron (Fe) and nickel (Ni) and hence it is also called as NIFE. The core constitutes nearly 15% of earth’s volume and 32.5% of earth’s mass.
Apr 30, 2023 · Earth is made up of several layers. Layers based on chemical composition are the core, mantle and crust. According to mechanical properties, Earth's layers are the lithosphere, asthenosphere ...
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Mar 26, 2010 · Earth Surface. [/caption]Most of the Earth surface, about 70%, is covered with water. The remaining 30% is made up of the seven continental landmasses. Underneath the water that fills the oceans ...
