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Although the Earth might seem stable, it is in constant motion, which
Although the Earth might seem stable, it is in constant motion, which

... Although the Earth might seem stable, it is in constant motion, which is controlled by dominant forces. ...
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Shaping Earths surface Ch 4 lesson 2

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PowerPoint - Vernon Hills High School

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Inside the Earth - ReedEarthScience

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Origin of Life - Hicksville Public Schools

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What is the Earth made of?

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Folleto-Guia ok ingles

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Chapter 1 Study Guide – Introduction To Earth Science 1. For a

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c1b revision sheet 1[1]

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Check for Understanding- Objective 1 ANSWER KEY

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Appendix F - Mineralogical Society
Appendix F - Mineralogical Society

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Earth Systems Standard 3, Objective 2 Title: Earth`s Interior Posters

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Layers of the Earth Vocabulary

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Layers of the Earth Vocabulary
Layers of the Earth Vocabulary

... The layer of rock that forms Earth’s surface The movement of energy from a warmer object to a cooler object A dense sphere of solid iron and nickel in the center of the Earth A rigid layer made up of the uppermost part of the mantle and the crust The molten mixture of rock forming substances, gases, ...
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2-Factors Affecting Climate Change - Part 1

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Earth: An Ever changing planet

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Plate Tectonics.common.assessment.studyguide
Plate Tectonics.common.assessment.studyguide

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ALFRED WEGENER THEORY OF CONTINENTAL

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Spherical Earth



The concept of a spherical Earth dates back to around the 6th century BC, when it was mentioned in ancient Greek philosophy, but remained a matter of philosophical speculation until the 3rd century BC, when Hellenistic astronomy established the spherical shape of the earth as a physical given. The paradigm was gradually adopted throughout the Old World during Late Antiquity and the Middle Ages. A practical demonstration of Earth's sphericity was achieved by Ferdinand Magellan and Juan Sebastián Elcano's expedition's circumnavigation (1519−1522).The concept of a spherical Earth displaced earlier beliefs in a flat Earth: In early Mesopotamian mythology, the world was portrayed as a flat disk floating in the ocean and surrounded by a spherical sky, and this forms the premise for early world maps like those of Anaximander and Hecataeus of Miletus. Other speculations on the shape of Earth include a seven-layered ziggurat or cosmic mountain, alluded to in the Avesta and ancient Persian writings (see seven climes).The realization that the figure of the Earth is more accurately described as an ellipsoid dates to the 18th century (Maupertuis).In the early 19th century, the flattening of the earth ellipsoid was determined to be of the order of 1/300 (Delambre, Everest). The modern value as determined by the US DoD World Geodetic System since the 1960s is close to 1/298.25.
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