The Earth

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{{Planet|title1 = Earth|image1 = [[File:Earth.png|thumb]]|caption1 = The Earth.|radius = 6,371 kilometers|diameter = 12,742 kilometers|minimum_temperature = -128°F|average_temperature = 59°F|maximum_temperature = 134°F|day = 23 hours, 56 minutes, 3 seconds, 980 milliseconds|year = 365.242 years|distance_from_sun = 149,600,000 kilometers|speed = 30 kilometers per second|age = 4,543,000,000 years|moons = 1|tilt = 23.4392811°|gravity = 9.807 m/s^2|similarity = 1}}'''Earth''' is the third [https://www.wikizero.com/en/Planet planet] from the [https://www.wikizero.com/en/Sun Sun] and the only object in the [https://www.wikizero.com/en/Universe Universe] known to harbor [https://www.wikizero.com/en/Life life]. According to [https://www.wikizero.com/en/Radiometric_dating radiometric dating] and other sources of evidence, Earth [https://www.wikizero.com/en/Age_of_the_Earth formed] over 4.5 [https://www.wikizero.com/en/Bya billion years ago]. [https://www.wikizero.com/en/Gravity_of_Earth Earth's gravity] interacts with other objects in space, especially the Sun and the [https://www.wikizero.com/en/Moon Moon], Earth's only [https://www.wikizero.com/en/Natural_satellite natural satellite]. Earth [https://www.wikizero.com/en/Earth%27s_orbit revolves around the Sun] in 365.26 days, a period known as an Earth [https://www.wikizero.com/en/Year year]. During this time, Earth [https://www.wikizero.com/en/Earth%27s_rotation rotates about its axis] about 366.26 times. Earth's [https://www.wikizero.com/en/Earth#Axial_tilt_and_seasons axis of rotation] is tilted, producing [https://www.wikizero.com/en/Season seasonal variations] on the planet's surface. The [https://www.wikizero.com/en/Gravity gravitational interaction] between the Earth and Moon causes [https://www.wikizero.com/en/Tide ocean tides], stabilizes the Earth's orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the [https://www.wikizero.com/en/Solar_System Solar System] and the largest of the four [https://www.wikizero.com/en/Terrestrial_planet terrestrial planets].

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[https://www.wikizero.com/en/Lithosphere#Earth's_lithosphere Earth's lithosphere] is divided into several rigid [https://www.wikizero.com/en/Plate_tectonics tectonic plates] that migrate across the surface over periods of many millions of years. About 71% of Earth's surface is [https://www.wikizero.com/en/Water_distribution_on_Earth covered with water], mostly by [https://www.wikizero.com/en/Ocean oceans]. The remaining 29% is [https://www.wikizero.com/en/Land#History_of_land_on_Earth land] consisting of [https://www.wikizero.com/en/Continent continents] and [https://www.wikizero.com/en/Island islands] that together have many lakes, rivers and other sources of water that contribute to the [https://www.wikizero.com/en/Hydrosphere hydrosphere]. The majority of [https://www.wikizero.com/en/Polar_regions_of_Earth Earth's polar regions] are covered in ice, including the [https://www.wikizero.com/en/Antarctic_ice_sheet Antarctic ice sheet] and the sea ice of the Arctic ice pack. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates the [https://www.wikizero.com/en/Earth%27s_magnetic_field Earth's magnetic field], and a convecting [https://www.wikizero.com/en/Mantle_(geology) mantle] that drives plate tectonics.

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Within the first billion years of [https://www.wikizero.com/en/History_of_Earth Earth's history], [https://www.wikizero.com/en/Abiogenesis life appeared in the oceans] and began to affect the [https://www.wikizero.com/en/Atmosphere_of_Earth Earth's atmosphere] and surface, leading to the proliferation of [https://www.wikizero.com/en/Aerobic_organism aerobic] and [https://www.wikizero.com/en/Anaerobic_organism anaerobic organisms]. Some geological evidence indicates that life may have arisen as much as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties, and [https://www.wikizero.com/en/Geological_history_of_Earth geological history]have allowed life to evolve and thrive. n the history of the Earth, [https://www.wikizero.com/en/Biodiversity biodiversity] has gone through long periods of expansion, occasionally punctuated by [https://www.wikizero.com/en/Extinction_event mass extinction events]. Over 99% of all [https://www.wikizero.com/en/Species species] that ever lived on Earth are [https://www.wikizero.com/en/Extinct extinct]. Estimates of the number of species on Earth today vary widely; most species have not been described. [https://www.wikizero.com/en/World_population Over 7.7 billion humans] live on Earth and depend on its [https://www.wikizero.com/en/Biosphere biosphere] and [https://www.wikizero.com/en/Natural_resources natural resources] for their survival. Humans have developed diverse [https://www.wikizero.com/en/Society societies] and [https://www.wikizero.com/en/Culture cultures]; politically, the world has [https://www.wikizero.com/en/List_of_sovereign_states about 200 sovereign states].

[[Category:Planets]]

[[Category:Earth]]

Changes: The Earth

Revision as of 17:45, 16 May 2020

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-{{Planet|title1 = Earth|image1 = [[File:Earth.png|thumb]]|caption1 = The Earth.|radius = 6,371 kilometers|diameter = 12,742 kilometers|minimum_temperature = -128°F|average_temperature = 59°F|maximum_temperature = 134°F|day = 23 hours, 56 minutes, 3 seconds, 980 milliseconds|year = 365.242 years|distance_from_sun = 149,600,000 kilometers|speed = 30 kilometers per second|age = 4,543,000,000 years|moons = 1|tilt = 23.4392811°|gravity = 9.807 m/s^2|similarity = 1}}'''Earth''' is the third [https://www.wikizero.com/en/Planet planet] from the [https://www.wikizero.com/en/Sun Sun] and the only object in the [https://www.wikizero.com/en/Universe Universe] known to harbor [https://www.wikizero.com/en/Life life]. According to [https://www.wikizero.com/en/Radiometric_dating radiometric dating] and other sources of evidence, Earth [https://www.wikizero.com/en/Age_of_the_Earth formed] over 4.5 [https://www.wikizero.com/en/Bya billion years ago].  [https://www.wikizero.com/en/Gravity_of_Earth Earth's gravity] interacts with other objects in space, especially the Sun and the [https://www.wikizero.com/en/Moon Moon], Earth's only [https://www.wikizero.com/en/Natural_satellite natural satellite]. Earth [https://www.wikizero.com/en/Earth%27s_orbit revolves around the Sun] in 365.26 days, a period known as an Earth [https://www.wikizero.com/en/Year year]. During this time, Earth [https://www.wikizero.com/en/Earth%27s_rotation rotates about its axis] about 366.26 times. Earth's [https://www.wikizero.com/en/Earth#Axial_tilt_and_seasons axis of rotation] is tilted, producing [https://www.wikizero.com/en/Season seasonal variations] on the planet's surface. The [https://www.wikizero.com/en/Gravity gravitational interaction] between the Earth and Moon causes [https://www.wikizero.com/en/Tide ocean tides], stabilizes the Earth's orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the [https://www.wikizero.com/en/Solar_System Solar System] and the largest of the four [https://www.wikizero.com/en/Terrestrial_planet terrestrial planets].
-[https://www.wikizero.com/en/Lithosphere#Earth's_lithosphere Earth's lithosphere] is divided into several rigid [https://www.wikizero.com/en/Plate_tectonics tectonic plates] that migrate across the surface over periods of many millions of years. About 71% of Earth's surface is [https://www.wikizero.com/en/Water_distribution_on_Earth covered with water], mostly by [https://www.wikizero.com/en/Ocean oceans]. The remaining 29% is [https://www.wikizero.com/en/Land#History_of_land_on_Earth land] consisting of [https://www.wikizero.com/en/Continent continents] and [https://www.wikizero.com/en/Island islands] that together have many lakes, rivers and other sources of water that contribute to the [https://www.wikizero.com/en/Hydrosphere hydrosphere]. The majority of [https://www.wikizero.com/en/Polar_regions_of_Earth Earth's polar regions] are covered in ice, including the [https://www.wikizero.com/en/Antarctic_ice_sheet Antarctic ice sheet] and the sea ice of the Arctic ice pack. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates the [https://www.wikizero.com/en/Earth%27s_magnetic_field Earth's magnetic field], and a convecting [https://www.wikizero.com/en/Mantle_(geology) mantle] that drives plate tectonics.
-Within the first billion years of [https://www.wikizero.com/en/History_of_Earth Earth's history], [https://www.wikizero.com/en/Abiogenesis life appeared in the oceans] and began to affect the [https://www.wikizero.com/en/Atmosphere_of_Earth Earth's atmosphere] and surface, leading to the proliferation of [https://www.wikizero.com/en/Aerobic_organism aerobic] and [https://www.wikizero.com/en/Anaerobic_organism anaerobic organisms]. Some geological evidence indicates that life may have arisen as much as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties, and [https://www.wikizero.com/en/Geological_history_of_Earth geological history]have allowed life to evolve and thrive. n the history of the Earth, [https://www.wikizero.com/en/Biodiversity biodiversity] has gone through long periods of expansion, occasionally punctuated by [https://www.wikizero.com/en/Extinction_event mass extinction events]. Over 99% of all [https://www.wikizero.com/en/Species species] that ever lived on Earth are [https://www.wikizero.com/en/Extinct extinct]. Estimates of the number of species on Earth today vary widely; most species have not been described. [https://www.wikizero.com/en/World_population Over 7.7 billion humans] live on Earth and depend on its [https://www.wikizero.com/en/Biosphere biosphere] and [https://www.wikizero.com/en/Natural_resources natural resources] for their survival. Humans have developed diverse [https://www.wikizero.com/en/Society societies] and [https://www.wikizero.com/en/Culture cultures]; politically, the world has [https://www.wikizero.com/en/List_of_sovereign_states about 200 sovereign states].
 [[Category:Planets]]
 [[Category:Earth]]