earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4.5 billion years ago. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, which is Earth's only natural satellite. Earth orbits around the Sun in 365.26 days, a period known as an Earth year. During this time, Earth rotates about its axis about 366.26 times.Earth's axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The gravitational interaction between Earth and the Moon causes tides, stabilizes Earth's orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest and most massive of the four rocky planets.
Earth's lithosphere is divided into several rigid tectonic plates that migrate across the surface over many millions of years. About 71% of Earth's surface is covered with water, mostly by oceans. The remaining 29% is land consisting of continents and islands that together contain many lakes, rivers and other sources of water that contribute to the hydrosphere. The majority of Earth's polar regions are covered in ice, including the 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 Earth's magnetic field and a convecting mantle that drives plate tectonics.
Within the first billion years of Earth's history, life appeared in the oceans and began to affect the Earth's atmosphere and surface, leading to the proliferation of anaerobic and, later, aerobic organisms. Some geological evidence indicates that life may have arisen as early as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties and geological history have allowed life to evolve and thrive. In the history of life on Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinction events. Over 99% of all species that ever lived on Earth are extinct. Estimates of the number of species on Earth today vary widely; most species have not been described. Over 7.7 billion humans live on Earth and depend on its biosphere and natural resources for their survival. Humans have developed diverse societies and cultures; politically, the world has around 200 sovereign states.

View More On Wikipedia.org
Recent contents
  1. FRANCIS DA DON

    Napendekeza dunia iwe na nchi moja tu ya ‘United states of Earth’ (USE). Raia wa kigeni ni yule wa kutoka sayari nyingine tu

    Kwahiyo Raia wote wa USE wanaweza kwenda popote pale duniani na kufanya biashara na kuoa na kufanya maisha yao bila vikwazo vya Visa nk. Utahitaji Visa labda kama unaenda sayari nyingine tofauti na dunia. Rais awe mmoja tu.., hapatakuwa na serikali mbili wala tatu..
  2. Shining Light

    Let's contribute to the World Earth day by recycle, reuse and reduce plastic

    World Earth Day is such an important occasion, and this year's theme, "Planet vs. Plastic," really highlights the impact of plastic pollution on our environment. It's fascinating to think about how these international days come to be. They're usually established by organizations or movements...
  3. K

    Earth Auger Drilling Machine.

    Hiyo hapo mashine ya utafiti wa madini, utafiti wa udongo maeneo ya ujenzi wa barabara au magorofa. Mashine inauwezo wa kuchimba hadi mita 9.
  4. Mathanzua

    This is how they plan to eventuallylock down planet Earth

    This is how they plan to eventually lock down planet Earth April 4, 2024 What else needs to be said about this transparently staged COVID-19 Plandemic after all the naked and veiled attempts to enact Medical Martial Law via the WHO Pandemic Preparedness Treaty?! By their own actions, it’s now...
  5. The Shah of Tanganyika

    Black Africans to Disappear on Earth in 1000 Years

    Possibly in 700 years, what we see as black Africa lands will be populated with Arab and white. Black will be a rare minority on the land, just like the Neanderthal or the red indians. Why? Black Africans are busy killing each other and surrendering control of their resources to superior races...
  6. R

    The Catholic Church is the Biggest Financial Power on Earth

    “The Catholic church is the biggest financial power, wealth accumulator and property owner in existence. She is a greater possessor of material riches than any other single institution, corporation, bank, giant trust, government or state of the whole globe. . Their wealth is so big that they...
  7. Mathanzua

    SCIENTIFIC RESEARCH PAPER: Super Energy Weapons Triggering Earthquakes, Volcanoes and Other Earth Movements

    Preamble: I thought it important to bring this paper to the attention of the doubting Thomases and sleeping masses.Most people still believe that what we used to call natural disasters are "still natural," not at all,NWO Cabal scientists have now at their disposal Super Energy weapons for...
  8. The Supreme Conqueror

    Maeneo 6 Duniani ambapo jua halizami

    6 places on Earth where the sun never sets! Our routine revolves around 24 hours a day, with around 12 hours of sunlight, and the remaining hours are night time. But, did you know that there are places across the world where the sun does not go down for more than 70 days? Imagine how...
  9. Lycaon pictus

    Jinsi ya kupima kiwanja/shamba kwa google earth.

    1. Kwanza unasearch mji/ mtaa au sehemu kiliko kiwanja. Labda Arusha. 2. Kisha unazoom kukipata hicho kiwanja. Labda kiwanja pembeni na uwanja wa Sheikh Amri Abeid. 3. Unaclick kwenye hiyo alama ya pili toka kulia. Iliyo kama alama ya rula. Itakuletea hako kaduara kama ka kulenga. Utakaweka...
  10. Mathanzua

    Rainwater everywhere on Earth unsafe to drink, due to what are called ‘Forever Chemicals(PFOAs) study finds

    Rainwater almost everywhere on Earth has unsafe levels of ‘forever chemicals’, according to new research. Per- and Poly-fluoroalkyl substances (PFOAS/PFAS) are a large family of human made chemicals that don’t occur in nature. They are known as ‘forever chemicals’ because they don’t break down...
  11. Da Vinci XV

    Earth is hard

    Bila shaka tumeondoka na Kitu
  12. Superbug

    Google Earth itasaidia kuishangaza dunia juu ya kazi za Rais Samia

    Mchakamchaka wa kujenga madarasa nchi nzima utaishangaza dunia kupitia Google Earth waki update image zao by January 2022. Nchi itakuwa imejaa mijengo tu nchi nzima. Huwezi amini Kuna shule naijua imepewa madarasa kumi kwa mpigo. Hakyanani mama unajua kucheza draft bila mbwembwe. Watu wengi...
  13. presider

    Generator, Air compressor and Earth moving machine

    GENERATOR AND AIR COMPRESSOR SOLUTION We dealing with:- ■Generator ☆Selling generator Used and New ☆Preventive and Breakdown maintenances ☆Generator installation ■Air Compressor ☆Selling Air compressor Used and New ☆Preventive and Breakdown maintenances ☆Air compressor installation ■Machine...
  14. S

    Peak secures mining licence for Ngualla rare earth project in Tanzania

    Peak Resources has secured a special mining licence (SML) from the Tanzanian government for its AUD200m ($147.4m) Ngualla rare earth project located in the southern part of the East African country. The Australia-based company’s fully-owned subsidiary PR NG Minerals was given approval by the...
  15. F

    Consequences of Albinos Being Born to Earth

    The following are the results of Albinos being molested by fellow humans who should have protected them. The reader should take note that all reasons that are given in this chapter are avoidable hence reconcilable. Separation and/or divorce of parents. Some couples have separated and or...
  16. eliakeem

    Kenya is Among of 25 Dangerous Countries on Earth

    The country is trying and pushing hard to get out of the list of most dangerous countries on the earth. But nothing tangible has been achieved. Look the article below. 👇🏽👇🏽👇🏽 ====== 25 Most Dangerous Countries in the World Habib Ur Rehman In this article, we take a look at the 25...
  17. Behaviourist

    Two world on single earth

    My take: Mtu mweusi ni Kima aliechangamka.
  18. H

    Msaada: Theories on the origin of the earth

    Habari wakuu...poleni na kazi nlikuwa naomba mnipe mwanga kidogo kuhusu hizi theories on the origin of the earth nebular theories protoplanet theory encounter theory big bang theory fission theory accretion theory gas cloud theory stellar collision theory
  19. MALCOM LUMUMBA

    Give the devil his due: Pres J. Kikwete is a down to earth person

    Some Hate him and Some Like him, But one thing even his haters do agree: On personal level President Kikwete is a gentleman per-excellence. He's endowed with virtues most people, essentially his peers fall short of -- "The emotional stamina" and "Class". I took my time watching these mini-talk...
  20. T

    RC Kunenge ni darasa kwetu vijana, is down to earth

    Ndugu zangu kiukweli mimi siyo Muislam Ila Walah RC Kunenge amenigusa sana yaani kama kuna RC nimetokea kumpenda basi ni huyu RC mpya wa DSM. Ni kama aliandaliwa, ni kama alikuwa amewekwa mahali kwa kazi maalum. Kwanza hii sio nafasi yake ya kwanza kuwa kiongozi Ila huwezi jua wala huwezi amini...
Back
Top Bottom
Forums
New posts
Post thread
Back