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Name_________________________ Earth`s
Name_________________________ Earth`s

... The outer layer of the earth is called the __________________. It is made up of tectonic ________________. Just underneath the crust is the _____________________ and right in the middle of the earth is the _____________. Colliding plates produce _______________________ and _____________________ at t ...
Name
Name

... The Earth’s lithosphere is made of a number of solid pieces , called ____________ which move in relation to each other. These plates are “riding” on a more “plastic molten” layer below. This layer is called the ASTHENOSPHERE. The evidence shows that approximately _______ million years ago, the major ...
Curriculum Correlation Nelson B.C. Science Probe 7
Curriculum Correlation Nelson B.C. Science Probe 7

... the features on the surface of Earth are formed by tectonic activity, particularly, at convergent, divergent, or transform fault tectonic plate boundaries and by the processes of wind, water, and ice that wear down surface features over time ...
Non-Trad PA - Layers and Tectonics of Earth
Non-Trad PA - Layers and Tectonics of Earth

... 3. Then match the two halves of the earth back up and secure them together with large, straightened-out paper clips such that they can be taken apart easily to see the layers. Part III: Major Geological Events Assessment 1. Students will pick one example each from a teacher-created list of real-worl ...
Surfaces and features of the Earth 4th.notebook
Surfaces and features of the Earth 4th.notebook

... into huge plates that shift and move on the molten layers  below the crust. Where two plates come together = fault zones Along these zones mountains, volcanoes, and earthquakes  ...
Driving Forces- Plate Movement Transcript
Driving Forces- Plate Movement Transcript

... ..Conduction is a form of heat transfer by which particles of matter have direct contact with one another. The third type of heat transfer is ..Convection is heat transfer by the movement of heated liquid. This method is the heat transfer method this lesson will focus on. Slide 5: Plate Movement ..S ...
Layers of Earth Notes
Layers of Earth Notes

... The South American plate is a single plate containing both continental and oceanic crust. It is surrounded by several other oceanic plates. ...
Earth: Portrait of a Planet 3rd edition
Earth: Portrait of a Planet 3rd edition

... The Mohorovicic discontinuity is the lower boundary.  Separates the crust from the upper mantle.  Discovered in 1909 by Andrija Mohorovicic.  Marked by a change in the velocity of seismic P waves. ...
Chapter 8 Study Guide
Chapter 8 Study Guide

... The slow shifts of our planet's crust are believed to arise from (a) the gravitational force of the Moon pulling on the crust. (b) the gravitational force of the Sun pulling on our planet's crust. (c) the Earth's magnetic field drawing iron in crustal rocks toward the poles. (d) heat from the inter ...
Chapter 1 Introduction to Earth Science Section 1 What Is Earth
Chapter 1 Introduction to Earth Science Section 1 What Is Earth

... elements. Figure 3 on page 4 summarizes some key points of this hypothesis. High temperatures and weak fields of gravity characterized the inner planets. As a result, the inner planets were not able to hold onto the lighter gases of the nebular cloud. The lightest gases, hydrogen and helium, were wh ...
seismic waves notes - Fort Thomas Independent Schools
seismic waves notes - Fort Thomas Independent Schools

... • Earthquake waves travel out in all directions from a point where strain energy is released. This point is the focus. • The point on Earth’s surface directly above the focus is the epicenter. ...
Plate Tectonics
Plate Tectonics

... became accepted by the scientific community. Some continents fit together almost perfectly, e.g. South America and Africa. Similar fossils can be found on different continents. This shows these regions were once very close or joined together. ...
Weathering, Erosion, and Plate Tectonics
Weathering, Erosion, and Plate Tectonics

... different features of the earth? ► What are tectonic plates? ► What are the three major Types of Plate ...
In geologic terms, a plate is a large, rigid slab of solid rock
In geologic terms, a plate is a large, rigid slab of solid rock

... fossil species along the coastal parts of Africa and South America was the most compelling evidence that the two continents were once joined. In Wegener's mind, the drifting of continents after the break-up of Pangaea explained not only the matching fossil occurrences but also the evidence of dramat ...
presentation
presentation

... Earth structure: The main units • Crust versus mantle: The crust is a product of mantle melting. Typical mantle rocks have a higher magnesium to iron ratio, and a smaller portion of silicon and aluminum than the crust. • Lithosphere versus asthenosphere: While the lithosphere behaves as a rigid bod ...
Forces Within Earth
Forces Within Earth

... three types of seismic waves. • Primary waves, or P-waves, squeeze and pull rocks in the same direction along which the waves are traveling. ...
ALFRED WEGENER THEORY OF CONTINENTAL DRIFT
ALFRED WEGENER THEORY OF CONTINENTAL DRIFT

... •The age and kind of rocks and minerals along the edge of one continent match rocks and minerals along the edge of another continent. ...
Document
Document

... Earth structure: The main units • Crust versus mantle: The crust is a product of mantle melting. Typical mantle rocks have a higher magnesium to iron ratio, and a smaller portion of silicon and aluminum than the crust. • Lithosphere versus asthenosphere: While the lithosphere behaves as a rigid bod ...
Plate Tectonics Collage
Plate Tectonics Collage

... picture of the rift or the valley running along the middle of the ridge. These are made when convection currents form magma where two tectonic plates meet. Then the magma pushes upward to create something that looks like a mountain range. In some places the magma leaks through and makes vents. ...
PDF sample
PDF sample

... rocks how long ago the rocks formed. Using fossils, they have divided the Earth’s history since Precambrian Time into 11 periods. Layers of rock form on top of each other, so the oldest rocks are usually at the bottom and the youngest at the top, unless they have been disturbed. The order of layers ...
Earth`s Crust Unit Plan
Earth`s Crust Unit Plan

... -In groups, put two papers between the desks. Slowly pull them in opposite directions. Student draws a point at the ridge to indicate the new floor formed. Students draw subsequent points to show different periods of time. 11. Locations of Earthquakes, Volcanoes, and Mountain Ranges ...
Science
Science

... geologic processes (including volcanic eruptions and mountain-building forces). Taxonomy level: 2.2-B Understand Conceptual Knowledge ...
Atmosphere Hydrosphere Lithosphere
Atmosphere Hydrosphere Lithosphere

...  All of the water on planet Earth  “71% of the earth is covered by water and only 29% is terra firma” (University of Florida).  “Blue Planet” – water is not found on any other planets in our solar system.  “It is because the Earth has just the right mass, the right chemical composition, the righ ...
GEOL 1010 - I Professor Bunds - Research at UVU
GEOL 1010 - I Professor Bunds - Research at UVU

... A BRIEF OUTLINE OF MATERIAL COVERED IN CLASS 1. Scientific method – observations, hypotheses, theories etc. 2. Earth history overview a. 4.5 - 4.6 billion years old, ~3.8 Ba oldest rocks in the crust (water) 3.5 Ba algae, little life but algae until 570 Ma (million years ago), when many forms of lif ...
APES_Chapter_16_Part_1_Geology_Guided_Power_Point_Notes
APES_Chapter_16_Part_1_Geology_Guided_Power_Point_Notes

... 15 Earthquakes occur when ____________________________ move on an existing faults, along plate boundaries and along the mid-oceanic ridges where the sea floor is spreading. 16 The point of movement underground is called the focus of the ________________________. • From the focus- seismic waves trave ...
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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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