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  2. Earth science - Wikipedia

    en.wikipedia.org/wiki/Earth_science

    Earth science or geoscience includes all fields of natural science related to the planet Earth. [1] This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere , hydrosphere / cryosphere , atmosphere , and geosphere (or lithosphere ).

  3. Earth's crustal evolution - Wikipedia

    en.wikipedia.org/wiki/Earth's_crustal_evolution

    High δ 18 O values of zircons represent rock recycled at the Earth's surface and thus potentially producing mixed samples. [24] The outcome of this combined analysis is valid zircons showing periods of increased crustal generation at 1.9 and 3.3 Ga, the latter of which representing the time period following the commencement of global plate ...

  4. Portal:Earth sciences - Wikipedia

    en.wikipedia.org/wiki/Portal:Earth_sciences

    Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere , hydrosphere / cryosphere , atmosphere , and geosphere (or lithosphere ).

  5. Earth system science - Wikipedia

    en.wikipedia.org/wiki/Earth_system_science

    [10] [11] [12] Subsets of Earth System science include systems geology [13] [14] and systems ecology, [15] and many aspects of Earth System science are fundamental to the subjects of physical geography [16] [17] and climate science. [18]

  6. Internal structure of Earth - Wikipedia

    en.wikipedia.org/wiki/Internal_structure_of_Earth

    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]

  7. Geoscience education - Wikipedia

    en.wikipedia.org/wiki/Geoscience_education

    These groups bring together geoscientists, educators, and researchers to explore how to engage and motivate students to learn about the Earth and its complex systems. They conduct research to identify best practices in geoscience education, develop innovative teaching methods and materials, and evaluate the effectiveness of different approaches.

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  9. Plate tectonics - Wikipedia

    en.wikipedia.org/wiki/Plate_tectonics

    Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.