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Crust
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- Earth’s outer surface is its crust; a cold, thin, brittle outer shell made of rock. The crust is very thin, relative to the radius of the planet.
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3 days ago · Earth’s surface is traditionally subdivided into seven continental masses: Africa, Antarctica, Asia, Australia, Europe, North America, and South America. These continents are surrounded by five major bodies of water: the Arctic , Atlantic , Indian , Pacific , and Southern oceans.
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- 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
Earth’s outer surface is its crust; a cold, thin, brittle outer shell made of rock. The crust is very thin, relative to the radius of the planet. There are two very different types of crust, each with its own distinctive physical and chemical properties.
Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust.
- 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.
Nov 11, 2019 · Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust. Except for the crust, no one has ever explored these layers in person.
Our home planet Earth is a rocky, terrestrial planet. It has a solid and active surface with mountains, valleys, canyons, plains and so much more. Earth is special because it is an ocean planet. Water covers 70% of Earth's surface. Earth's atmosphere is made mostly of nitrogen and has plenty of oxygen for us to breathe.
