• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Geography & Maps
Geography & Maps

... • New Orleans: major port and gateway to the Mississippi, the majority of the city is below ...
Ocean waves that wear away an island`s shoreline
Ocean waves that wear away an island`s shoreline

... 8. Wegner believed the continents had once been joined in one landmass called ____________________. 9. The theory of ____________________ states all the continents once were joined as a single supercontinent and have since drifted apart. 10.To support his theory, Alfred Wegener provided evidence fro ...
EnvSci Chapter 3 Review Answers
EnvSci Chapter 3 Review Answers

... Aquifer - _A rock layer that stores and allows the flow of groundwater_ Recharge Zone - _The surface of the land where water enters an aquifer_ Where is most fresh water found? _Glaciers and polar ice_ Why does ocean water have a higher salinity than freshwater? _The salts build up as they are colle ...
File
File

... using patterns of primary (P) and secondary (S) seismic wave arrivals – Clarification: The travel speed of seismic waves is strongly influenced by rock density, state of matter (liquid, solid) and pressure from depth. Changing density causes seismic energy to reflect and change direction incremental ...
PDF only
PDF only

... and importance. For decades, estimates of rock-sample latitude at the time of acquired magnetization, called paleolatitude, have been deduced from measurements the extant magnetic inclination. Paleolatitude determinations provide the principal basis for Pangaea-like supercontinent reconstructions an ...
Changes to Earth`s Surface
Changes to Earth`s Surface

... calculate an earthquake’s strength. Richter scale - estimates the amount of energy released by an earthquake. Moment Magnitude scale - uses the amplitude of earthquake waves to estimate and earthquake’s energy and fault rupture area. Mercalli intensity scales - measure an earthquakes damage. ...
EARTH
EARTH

... Formation of Earth • Earth formed out of solar nebula • Formed at same time as other planets (4.6 billion years ago) • Started out as rocky ball of uniform composition and density ...
Plate Tectonics Vocabulary 1. asthenosphere
Plate Tectonics Vocabulary 1. asthenosphere

... plate tectonics- the theory that explains how large pieces of the Earth’s outermost layer, called tectonic plates, move and change shape ...
Section 19.1 - CPO Science
Section 19.1 - CPO Science

... 1. When S-waves are produced on one side of Earth due to an earthquake, there is a large area on the other side where the waves can’t be detected. 2. Scientists know that secondary waves do not pass through liquids. 3. With this fact and these observations, they realized that the outer core of Earth ...
Chapter 1, Section 1 – Earth`s Interior
Chapter 1, Section 1 – Earth`s Interior

... c. Lower mantle: solid material that extends to core iii. Core: innermost layer of mantle 1. made of iron and nickel 2. two parts: a. liquid (molten metal) outer core b. solid metal inner core (under too much pressure for iron and nickel molecules to spread out) b. Core and magnetic field i. Created ...
Inside the Earth
Inside the Earth

... About half of our planet’s mass. The mantle is composed of very hot dense rocks, That move and flow, always on the go, they never lock, Never stop, and they’re responsible for tectonic shift Please believe the Earth’s plates are adrift It’s pretty thick and the heat is awesome 1,600 at the top, 4,00 ...
無投影片標題
無投影片標題

... Key Concepts for Plate Tectonics (III) • Most of the large-scale features seen at Earth surface may be explained by the interactions of plate tectonics. Plate tectonics also explains why our ancient planet has surprisingly young seafloors, the oldest of which is only as old as the dinosaurs, that i ...
Earth Science - Ms. Harper`s Science Class
Earth Science - Ms. Harper`s Science Class

... processes that change it • Oceanography -- study of earth’s oceans ...
External Forces Affecting Earth
External Forces Affecting Earth

... External Forces Affecting Earth • EARTH IS ALSO AFFECTED AND ...
PPT
PPT

... O the ratio of the mass of a substance to the volume of the substance; the ...
Greek and Latin Roots 1
Greek and Latin Roots 1

... Greek and Latin Roots 1 ...
Tectonic plates, Earthquakes, and the Earth`s guts
Tectonic plates, Earthquakes, and the Earth`s guts

... demonstrate this. Melted cheese, melted chocolate, or thick gravy heated in a saucepan will form a crust on top that cracks and moves as the goop is heated. Note that the goop does not have to boil in order for “convection currents” to move the surface! Very slow convection currents in the mantle (r ...
Geology Rocks! - Billy B. Productions
Geology Rocks! - Billy B. Productions

... cycle - A sequence of events that is repeated again and again. erosion - The transportation of products of weathering by water, gravity, wind or ice. layers - A single thickness of something that lies over, under or between something. mountain - A high and often rocky area of a land mass with steep ...
TN Chapter 5 EARTH
TN Chapter 5 EARTH

... 1) Heat generation from the impact of small bodies that eventually formed the Earth by their mutual gravitation 2) The radioactive decay of radioactive elements that occur naturally in the mix of materials that made up the Earth The Earth’s Atmosphere: • Relative to other planetary atmospheres, the ...
0004_EarthProcesses
0004_EarthProcesses

... ---Heat left over from the formation of the earth ...
Geography Part 1
Geography Part 1

... pollution, people living in igloos or pueblo homes ...
Earth`s Interior Processes
Earth`s Interior Processes

... (crust and top of mantle) called plates move slowly on top of the earth’s asthenosphere (upper mantle). •  Alfred Wegener – proposed that the earth’s continents were once joined in a single supercontinent (known as Pangea) and broke apart into the continents –  This process was known as continental ...
The Earth in Space - Oxford University Press
The Earth in Space - Oxford University Press

... – Within-plate volcanism : ‘hot spot’ mantle plumes (e.g. Hawaiian islands in Pacific Ocean plate) © Oxford University Press, 2008. All rights reserved. ...
VENUS
VENUS

... • Heat flows from the interior to surface via conduction, not through edges of plates as on the Earth, and no Plate Tectonics • High temperature leads to soft, thin crust • Has little or no magnetic field; surprising since iron core must be molten. Why? • Slow rotation – 243 earth days! More than th ...
Geology - s3.amazonaws.com
Geology - s3.amazonaws.com

... fault-a fracture in Earth’s crust along which the blocks of rock on either side have been pushed together or moved apart mountain-an uplifted section of the surface of the Earth that is formed by the movement of two tectonic plates, and by volcanism, folding, and faulting Richter Scale-numerical sca ...
< 1 ... 124 125 126 127 128 129 130 131 132 ... 175 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report