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The atmospheric pressure at Earth's sea level averages 101.325 kPa (14.696 psi), [210] with a scale height of about 8.5 km (5.3 mi). [3] A dry atmosphere is composed of 78.084% nitrogen , 20.946% oxygen, 0.934% argon , and trace amounts of carbon dioxide and other gaseous molecules. [ 210 ]
Earth's outer core is a fluid layer about 2,260 km (1,400 mi) in height (i.e. distance from the highest point to the lowest point at the edge of the inner core) [36% of the Earth's radius, 15.6% of the volume] and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. [31]
In 2001, S. Labrosse and others, assuming that there were no radioactive elements in the core, gave an estimate of 1±0.5 billion years for the age of the inner core — considerably less than the estimated age of the Earth and of its liquid core (about 4.5 billion years) [58] In 2003, the same group concluded that, if the core contained a ...
Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere , a solidified division of Earth 's layers that includes the crust and the upper part of the mantle . [ 1 ]
Solidified lava flow in Hawaii Sedimentary layers in Badlands National Park, South Dakota Metamorphic rock, Nunavut, Canada. Geology (from Ancient Greek γῆ (gê) 'earth' and λoγία () 'study of, discourse') [1] [2] is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. [3]
A lawyer who represented two women who testified before a House ethics committee said they testified Matt Gaetz paid them for sex, per media reports.
Topography globe featuring physical features of the Earth. A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to maps, but, unlike maps, they do not distort the surface that they portray except to scale it down. A model globe of Earth is called a terrestrial globe.
Indonesia's newly minted leader, President Prabowo Subianto, officially swore in his cabinet on Monday, a team that analysts said reflected continuity of his predecessor's main policies. Prabowo ...
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