• 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
Earth`s vital statistics Shape: almost spherical almost spherical Size
Earth`s vital statistics Shape: almost spherical almost spherical Size

... substances such as Iron gravitated slowly to the centre and lighter elements such as silica slowly welled upward to the surface to be concentrated on the crust. Result: interior is in concentric circles – each of distinct chemical composition and temperature Heat from the interior migrates outward f ...
Sea-Floor Spreading and Plate Tectonics Project
Sea-Floor Spreading and Plate Tectonics Project

... You have already peeled back the layers of the Earth to help investigate the wonders thousands of kilometers beneath our feet. It is now time to examine the movement that occurs beneath the crust that causes the plates of the Earth to move (and hopefully we can better understand the types of evidenc ...
here - ScienceA2Z.com
here - ScienceA2Z.com

... outer core, and the seed represents the inner core. Read "The Magic School Bus inside the earth" by Joanna Cole. This explains the layers of the earth and the composition of each. The inner core is a solid section of the Earth and is unattached to the mantle, being suspended by the molten outer core ...
Dynamic Earth Interactive Web Quest
Dynamic Earth Interactive Web Quest

... the challenge using your textbook page D11. When you are finished move on to the next chapter. 8.) Read the Slip, Slide, & Collide page and answer the following question: a. Give examples of geological phenomena we experience on Earth that are caused by the slipping, sliding, and colliding of tecton ...
The Four Layers
The Four Layers

... core consists of heavy metals (nickel and iron). The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The Outer and Inner Cores are hotter still with pressures so great that you would be squeezed into a ball ...
Plate Tectonics Crossword
Plate Tectonics Crossword

... subducting beneath another tectonic slab at a convergent plate boundary? 4) What term is given to a large fracture along the Earth’s crust? 5) What is the name for a plate boundary where the plates are moving away from one another? ...
The Earth - Cardinal Newman High School
The Earth - Cardinal Newman High School

... in 1965 a Canadian scientist, Wilson, discovered there are cracks in the continents similar to those on the ocean floor he saw the lithosphere was broken into pieces he called PLATES (both oceanic and continental ...
Lecture Chapter 7 Part 1
Lecture Chapter 7 Part 1

... • Focus = the place within the Earth where the rock breaks, producing an earthquake. • Epicenter = the point on the ground surface directly above the focus. • Energy moving outward from the focus of an earthquake travels in the form of seismic waves. ...
Orientation and Conferencing Plan Stage 6
Orientation and Conferencing Plan Stage 6

... The plates slowly push against or pull apart from one another, causing earthquakes. Magma is red-hot liquid rock from the upper mantle. It is under enormous pressure and it squeezes through the cracks in the crust to reach the surface, sometimes exploding violently. When magma reaches the Earth’s su ...
File
File

... Anything naturally occurring in the environment that humans use The advance of desert-like conditions into areas that previously were fertile; caused by 70. Desertification over-farming, overgrazing, drought, and climate change. 71. Urbanization The development or large land areas for cities 72. Emi ...
Earth Systems
Earth Systems

...  Because of the heat, the metals are molten and flow like a thick liquid. ...
Unit 1 - Lee County Schools
Unit 1 - Lee County Schools

... their needs for food and water, for shelter, and for an organized ...
End of unit exam study guide
End of unit exam study guide

... of continental drift and the theory of plate tectonics? Fossil and plant evidence • How does fossil evidence support Wegener’s hypothesis of continental drift? Fossil and plant evidence far away from each other on different continents • Sea-floor spreading occurs at which type of boundary? divergent ...
crust - River Dell Regional School District
crust - River Dell Regional School District

... The crust is thickest at the top of a mountain. (Think of it this way… if you start drilling at the top of a mountain you must drill all the way down through the mountain just to get to ground level. Then, you have to continue drilling until you hit the ocean floor. Only then does the actual drillin ...
August 2008
August 2008

... (i) Sketch a cross-sectional diagram from west to east through the region. ...
Earth Formation
Earth Formation

... answers. While we may not have the entire picture we have a good idea and it all starts with how stars are born. ...
06a -Test Geography Study Guide
06a -Test Geography Study Guide

... 3. Maps are usually drawn so that North is at the top. 4. All meridians (longitude lines) are the same length. 5. Sections of a map pasted onto a sphere to form a map of the world are called gores. 6. A map legend is a key found on the map, usually in the lower corner, and explains what colors and s ...
Journey to the Center of Earth
Journey to the Center of Earth

... Mountains of North America were exactly like the limestone in Scotland’s Highlands. ...
File - Sturgeon City
File - Sturgeon City

... The two types of plates are continental and oceanic. Continental plates are thicker but less dense than oceanic plates. This means when the two meet the oceanic plate will always subduct under the We have 3 major types of plate boundaries; Divergent, Convergent and Transform Divergent boundaries are ...
Chapter-2_PracticeTest
Chapter-2_PracticeTest

... 7. If you used the theory of plate tectonics to predict the most likely place for the next earthquake or volcanic eruption, you should predict that it is most likely to occur a) along boundaries between colliding lithospheric plates. b) where one has not happened in at least 10 million years. c) ...
Layers of the Earth powerpoint
Layers of the Earth powerpoint

... The Earth is composed of four different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball sm ...
Earthquake Unit Assessment Retake Preparation
Earthquake Unit Assessment Retake Preparation

... Reference Material: Convection in the Mantle (Lava Lamp Demo), Lesson 16 links (on website) 5) Write the definition for each type of heat transfer and draw a picture to illustrate meaning: Radiation Write a definition ...
The History of the Earth
The History of the Earth

... divided into epochs. - Epochs can be divided into ages. ...
File
File

... • At one time, our solar system could have had as many as 20 planets • When the earth was still molten, it got hit by one of them • The impacting body Took some of earth’s Mantle with it (about 1/3) forming the moon ...
18.3 - Faculty Perry, Oklahoma
18.3 - Faculty Perry, Oklahoma

... transform boundary occurs where tectonic plates scrape past each other rift valley a gap formed between two diverging plates magnetic reversal when Earth’s magnetic north and south poles switch places hot spot an area of volcanic activity that develops above a plume in the mantle ...
< 1 ... 48 49 50 51 52 53 54 55 56 ... 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