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REVIEW Use the following terms to answer the
REVIEW Use the following terms to answer the

... ____ 11. the centermost layer of the Earth, a solid sphere of metal, mostly iron & nickel. ____ 12. the layer of rock between the Earth’s outer core & crust in which rock is hot enough to flow in convection currents ____ 13. a thin outer layer of rock above a planet’s mantle, including all dry land ...
Presentation - Copernicus.org
Presentation - Copernicus.org

... beds appeared on the Mars at the middle stage of it’s evolution, and may be at this period photosynthesizing microorganisms existed on Mars (McKay et al., 1996). Powerful eruptions of gigantic volcanoes of Tharsis and Elysium, probably, led to fall of temperature and disappearance of liquid water on ...
Earth Systems Science Core Curriculum
Earth Systems Science Core Curriculum

... causes clouds of the lightest elements to condense into massive bodies. The mass and density of these bodies may become great enough for nuclear fusion to occur, creating stars. Nuclear fusion releases energy and fuses light elements into heavier elements. Some stars explode, producing clouds of hea ...
Plate Tectonics Vocabulary
Plate Tectonics Vocabulary

... The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations ...
Plate Tectonics
Plate Tectonics

... Most of these are due to the release of built-up energy along plate boundaries. When the pressure on a fault overcomes the friction on a fault, this occurs. ...
Unit 1 - Earth`s Dimensions Review Powerpoint
Unit 1 - Earth`s Dimensions Review Powerpoint

... A. Latitude lines are parallel and longitude lines meet at the poles B. Latitude lines are parallel and longitude lines meet at the equator C. Longitude lines are parallel and latitude lines meet at the equator D. Longitude lines are parallel and latitude lines meet at the poles ...
Slide 1
Slide 1

... • Explain what the theory of plate tectonics is, how it works, and how it is responsible for shaping the landforms on Earth’s surface. ...
BACKGROUND - Exploration Works
BACKGROUND - Exploration Works

... the plates slide, is called the asthenosphere. In contrast to the crust–mantle-core division, which was based on composition, the lithosphere and asthenosphere are separated based on strength. The lithosphere is strong, rigid rock, while the asthenosphere is a weaker, very viscous fluid. Students ha ...
Study Guide: Academic Standard 8-3 Earth`s Structure and Processes
Study Guide: Academic Standard 8-3 Earth`s Structure and Processes

...  At one time in geologic history the continents were joined together in one large landmass than was called Pangaea.  As the plates continued to move and split apart, oceans were formed, landmasses collided and split apart until the Earth’s landmasses came to be in the positions they are now;  Evi ...
Five Themese of Geography
Five Themese of Geography

... 2. The accurate shape of a globe allows mapmakers to show Earth’s continents and oceans much as they really are, except for their ____________________, or relative size. 3. On flat maps, a loss of accuracy, called ____________________, may occur in showing Earth’s surface. 4. What information source ...
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... Explain transform boundaries. Draw a picture and describe what is occurring at this type of boundary. What event occurs frequently at this type of boundary? ...
Name of Your Country
Name of Your Country

... Fig. 1-6: Site of lower Manhattan Island, New York City. There have been many changes to the area over the last 200 years. ...
region - slloyd
region - slloyd

... sphere – area where defining traits are present but not dominant; they begin to blend and overlap with surrounding regions realm – groups of distinct regions which share common traits back ...
Chapter 7 Section 1
Chapter 7 Section 1

... Magnets are simple examples of natural magnetic fields. Believe it or not, the Earth has a huge magnetic field. Because the core of our planet is filled with molten iron (Fe), there is a large field that protects the Earth from space radiation and particles such as the solar wind. When you look at t ...
Earth`s Layers Test Review Packet
Earth`s Layers Test Review Packet

... _________________________________________________________________________________________________________ _________________________________________________________________________________________________________ ________________________________________________________________________________________ ...
Molnar, P. (2011), Jack Oliver (1923-2011), Nature, 470, 176.
Molnar, P. (2011), Jack Oliver (1923-2011), Nature, 470, 176.

... differences between geologists (sometimes belittled for being quantitatively challenged) and geophysicists (sometimes perceived as believing only what they could not see with their eyes). Cornell led the widespread transformation of geology and geophysics departments into integrated Earth-science de ...
FAQs
FAQs

... in the ecological balance of nature and environment has taken place. Constructions of roads, buildings over urbanization, unplanned industrial growth are some activities performed by human beings which have changed the face of the earth. (16) What is soil? Ans.: A layer of loose materials which cove ...
Igneous Petrology
Igneous Petrology

... 2. If the earth is 4.567 Ga old, why is the oldest crust only 4.0 Ga? 3. Why is lower crust mafic and upper crust silicic? ...
chapter 11 Dynamic Planet
chapter 11 Dynamic Planet

... – Volcanic island arc forms on the overlying plate – BackBack-arc basin fills with volcanoclastic sediment ...
Chapter 3 Plate Tectonics
Chapter 3 Plate Tectonics

... • The earth once had a single landmass that broke up into large pieces, which have since drifted apart. • The name of this giant landmass is Pangaea which means all earth. • Wegner’s –Theory of continental drift • One supporting piece of evidence is the fossil Glossopteris( extinct now longer livin ...
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... focus in waves. The first waves to be detected are the fastest waves called the Primary waves, or P waves. P waves compress and expand the ground while they travel. Secondary waves are the second-fastest waves, and are also known as S waves. P and S waves travel from the focus through the Earth’s in ...
3. The Earth system
3. The Earth system

... The crust and the uppermost part of the mantle form a rigid layer called the lithosphere (Figs. 4). The lithosphere beneath the oceans (i.e. oceanic lithosphere) has an average thickness of 70 km. The lithosphere that forms the continents (i.e. continental lithosphere) can be more than 200 km thick. ...
Plate Tectonics - ESL Consulting Services
Plate Tectonics - ESL Consulting Services

... subducted plate, and rises toward the surface because it is less dense than the surrounding rock. The “Ring of Fire” around the Pacific Ocean is caused by this melting at subduction zones all around the Pacific. ...
DCA-geoscience-exam-3-study-guide-key
DCA-geoscience-exam-3-study-guide-key

... instruments called _seismographs___. 11. The Richter scale measures which earthquake characteristic? __magnitude___. ...
GEOS 101 The Dynamic Earth Fall 2011
GEOS 101 The Dynamic Earth Fall 2011

... Office Hours: Mon 3:30‐4:30, Tues 9:00‐11:00, Fri 10:00‐12:00, or by appointment  The Course   From volcanic eruptions and catastrophic earthquakes to the slow drift of continents and the passage of  ice ages, Earth processes have shaped the history of life and altered the development of human  civi ...
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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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