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Earth`s Changing Surface
Earth`s Changing Surface

Use the diagram below to fill in the appropriate part of the earth.
Use the diagram below to fill in the appropriate part of the earth.

... Scenario: This weekend I was at a garage sale and I bought a machine that would travel through the earth’s layers. So I decided to take a field trip and go to the core of the earth. But before I go, I decided to ask you about the density of the layers as you go through the earth. I also wanted to kn ...
Plate Tectonics Review
Plate Tectonics Review

... conclusion to draw from this evidence? a. Mesosaurus migrated across the ocean from location X to location Y. b. The continents of South America and Africa were joined when Mesosaurus lived. c. The present climates at locations X and Y are similar. 10. A chain of volcanoes commonly forms when a. a c ...
Plate Tectonics
Plate Tectonics

... 3. Rock Clues- Similar rock types of same age found in mountains of England and Eastern U.S. 4. Glacial Clues- Evidence of glaciers exist in areas that are too warm for them now Wegener died in 1930, scientific community made a joke of his work. ...
Chapter 6 Plate Tectonics
Chapter 6 Plate Tectonics

... Different properties of the Earth’s layers To explore the interior, scientists study the energy from earthquakes or underground explosions they set off. 1. Core, Mantle, Crust 2. Lithosphere and Asthenosphere ...
Document
Document

... Plate tectonic theory states that the Earth's surface is broken into rigid lithospheric plates that slide on top of asthenospheric mantle. The boundary between these lithosphere and asthenosphere is based on rheology (typically defined by an isotherm ~1280°C- it is not a compositional boundary). ...
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Document

Divergent Boundary
Divergent Boundary

... • Subduction- process by which ocean crust sinks beneath a deep-ocean trench and back into the mantle ...
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Low-Density Anomalies in the Mantle

... In the beginning of the 1970s, Morgan [1] introduced the concept of the mantle plume into the everyday terminology of geological research. In succeeding years, different aspects of this hypothesis were considered: the heat source and mechanisms of plume ascent [2–4]; isotope-geochemical features [3, ...
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Plate Tectonics Review Worksheet

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Plate Tectonics Notes

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Upper mantle

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Plate Tectonics Jeopardy 2016-17 - WITH

... 14. These are the 2 structures that are found around the Pacific Ocean and are there as a result of subduction of the oceanic plate under the continental plate, thereby providing evidence of tectonic plate movement. ...
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12/9 Convection Currents

Plate Tectonics Journey to the center of the Earth
Plate Tectonics Journey to the center of the Earth

... 22. When a liquid or gas is heated, the particles move __________ and spread apart. Therefore, the particles occupy more space. 23. What three factors set convection current in motion? a. ____________ and ____________ of the fluid b. Changes in the fluid’s ______________ c. Force of _____________ 24 ...
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Drillers propose deep-Earth quest By Jonathan Amos Science

... The mantle makes up the bulk of our planet's volume and mass. It stretches from the bottom of the crust down to the Earth's iron-nickel core some 2,900km further down. Its rocks are distinct in composition from those that make up the continents and the ocean floor. They are thought predominantly to ...
Prentice Hall
Prentice Hall

File - Paxson Science
File - Paxson Science

... Instructions: For each of the questions or prompts below, give a complete answer for all parts. Answer on a separate piece of paper! Since we do not have a Cambridge textbook for this course you will need to do a little research to find your answers. Use our textbook’s glossary, internet sources, an ...
Structure of the Earth
Structure of the Earth

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Unit 3 study Guide
Unit 3 study Guide

... 10.) Law of Superposition – older rocks/fossils are on the bottom while younger rocks/fossils are on the top 11.) Epicenter – the location on Earth’s surface directly above the focus, or origin, of an earthquake, and the sudden release of energy stored in rocks 12.) Focus – the point within Earth w ...
Earth`s Interior and Geophysical Properties
Earth`s Interior and Geophysical Properties

... (thickest under mountains) ...
Use the diagram below to fill in the appropriate part of the earth.
Use the diagram below to fill in the appropriate part of the earth.

... Scenario: This weekend I was at a garage sale and I bought a machine that would travel through the earth’s layers. So I decided to take a field trip and go to the core of the earth. But before I go, I decided to ask you about the density of the layers as you go through the earth. I also wanted to kn ...
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Mantle plume



A mantle plume is a mechanism proposed in 1971 to explain volcanic regions of the earth that were not thought to be explicable by the then-new theory of plate tectonics. Some such volcanic regions lie far from tectonic plate boundaries, for example, Hawaii. Others represent unusually large-volume volcanism, whether on plate boundaries, e.g. Iceland, or basalt floods such as the Deccan or Siberian traps.A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. The currently active volcanic centers are known as ""hot spots"". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.The hypothesis of mantle plumes from depth is not universally accepted as explaining all such volcanism. It has required progressive hypothesis-elaboration leading to variant propositions such as mini-plumes and pulsing plumes. Another hypothesis for unusual volcanic regions is the ""Plate model"". This proposes shallower, passive leakage of magma from the mantle onto the Earth's surface where extension of the lithosphere permits it, attributing most volcanism to plate tectonic processes, with volcanoes far from plate boundaries resulting from intraplate extension.
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