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3.1 Reading Guide
3.1 Reading Guide

... 7. Describe the contents of the crust. 8. Describe the contents of the mantle. 9. Describe the contents of the core. 10. When did the supercontinent, Pangaea, exist? 11. How are the Earth’s layers divided? 12. What is the lithosphere? ...
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The Sea floor: Layers of the earth

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Exploring Earth`s Surface

... To find a point on Earth’s surface, you need a grid. A grid uses lines to make rows and columns on a map. The rows go from side to side and the columns go up and down. Most maps and globes show a grid. To locate positions on Earth’s surface, scientist ...
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C1 Topic 7 the earth revision Earth`s Structure (and rocks) 1. List the

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the Earth`s interior must be much greater than 2.8 g/cm3 for the
the Earth`s interior must be much greater than 2.8 g/cm3 for the

... the Earth’s interior must be much greater than 2.8 g/cm3 for the entire Earth to average 5.5 g/cm3.This is partly due to the effect of compression, but also partly because the material in the Earth’s core is mostly iron, which is much more dense than rocks, even when it is not under great pressure. ...
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Chapter 6 Study Guide:​ ​Plate Tectonics Name: Vocabulary: write

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Ptolemy - LucarInfo.com

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05_2_Sci_Earth_T1 (05_2_Sci_Earth_T1)

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The science of Geology

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Earth System - Earth`s Structure
Earth System - Earth`s Structure

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Earth`s Interior

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Chapter 2 Physical Geography: A Living Planet

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... surface, then “flowing” across the surface and sinking back down. Earth’s surface in miniature. 3. Give a detailed explanation of Iain’s theory on why there is so much heat in the center of our planet? It began when the Earth was created (4.5 billion years ago). Heat was created by the collision of ...
2-1 Directed Reading
2-1 Directed Reading

... _____ 24. The source of Earth’s magnetic field may be a. the liquid iron in Earth’s outer core. b. the solid rock in the asthenosphere. c. Earth’s dense, rigid inner core. d. the rocky mantle. _____ 25. Scientists have learned that, in addition to Earth, the sun and moon also ...
Unit 7 Vocabulary
Unit 7 Vocabulary

... outer layer is made up of plates, which have moved throughout Earth's history. 3. continental drift - a theory proposed by Alfred Wegener in 1912 that explained how continents shift position on Earth's surface. 4. sea floor spreading - a process that occurs at midocean ridges, where new oceanic crus ...
Class Notes: Introduction to Earthquakes, Volcanoes, and Tectonic
Class Notes: Introduction to Earthquakes, Volcanoes, and Tectonic

... Class Opener: Do mapping activity and answer the following questions once complete A. Are all the earthquakes and volcanoes evenly spaced randomly across earth’s surface? If not, describe where there appear to be the most… B. Look at the “Earth’s fractured surface” map and read the introduction (bac ...
1.1 What Is Earth Science?
1.1 What Is Earth Science?

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Wegener`s Theory of Continental Drift

... Laurasia (northern hemisphere) and Gondwana (southern Hemisphere) ...
Olivia-module3
Olivia-module3

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Earth Science Introduction
Earth Science Introduction

... 1 Second = 1 Year • 35 minutes to birth of Christ • 1 hour+ to pyramids • 3 hours to retreat of glaciers from Wisconsin • 12 days = 1 million years • 2 years to extinction of dinosaurs • 14 years to age of Niagara Escarpment • 31 years = 1 billion years ...
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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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