• Study Resource
  • Explore
    • 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
Chapter 15 Geology and Nonrenewable Mineral Resources Notes
Chapter 15 Geology and Nonrenewable Mineral Resources Notes

... • Huge volumes of heated and molten rock moving around the earth’s interior form massive solid plates that move extremely slowly across the earth’s surface. – Tectonic plates: huge rigid plates that are moved with convection cells or currents by floating on magma or molten rock. ...
Catastrophic Events – Parts 1-3
Catastrophic Events – Parts 1-3

... b. The west coast is in the center of a continental plate c. The west coast is on a plate boundary d. The west coast is located on a hot spot in the earth’s crust 22. What do scientists think the primary cause of mountain building is? a. The cooling and shrinking of the Earth b. The heating and expa ...
Interior of the earth
Interior of the earth

... a sharp increase downward in the speed of earthquake waves there. The explanation for the increase at the Moho is presumed to be a change in rock types. Drill holes to penetrate the Moho have been proposed, and a Soviet hole on the Kola Peninsula has been drilled to a depth of 12 kilometers, but dri ...
Name Class___________ Date
Name Class___________ Date

... _____6. Dust and ash entering the atmosphere as a result of volcanic eruptions can affect Earth’s (1) tide (2) orbit (3) weather _____7. Which is an example of Earth’s hydrosphere? (1) ocean (2) tree (3) rock _____8. Movement of Earth’s crust along transform plate boundaries produces (1) cold fronts ...
Pangaea CC Reading
Pangaea CC Reading

... difficult  to  ignore.  The  Eastern  coast  of  South   America  seems  to  fit  perfectly,  almost  like  a  puzzle,   into  the  Western  coast  of  Africa.  At  the  same  time,   North  America  can  be  rotated  slightly,  and ...
One of the mysteries of the sea are the large number of seamounts
One of the mysteries of the sea are the large number of seamounts

... thrust/fold loading compared to non-isostatic processes such as mantle convection. One problem is the limited number of active source seismic transects of mountain belts. Arguably, the best data has been acquired offshore of orogenic belts (e.g. BIRPS). One orogenic belt, which is bounded on both it ...
Reply to reviewer ESDD-1-C149-2011 comments on “Assessing
Reply to reviewer ESDD-1-C149-2011 comments on “Assessing

... primordial CO2 as this is largely released from mid oceanic ridges where new oceanic crust rises to the surface. Gerlach (1989) estimates outgassing of CO2 are mid-oceanic ridges to be 10 − 37.8 × 1012 g/y while a more recent study on analysis of empirical data (Chavrit et al., 2009) gives lower est ...
Chapter 2
Chapter 2

... Thick (20 – 50 km) Can be old (3.8by) ...
Quiz Bowl Earth Terms
Quiz Bowl Earth Terms

... Geothermal energy – Electric power that is generated from steam produced by hot rocks, usually associated with volcanic activity. Glaciation – The formation and movement of glaciers or ice sheets. Glacier – A mass of ice on land that flows slowly under gravity’s influence. Valley glaciers flow down ...
Convection Currents
Convection Currents

... Differences in temperature cause differences in density. Dense things sink and light things float. ...
chapter1
chapter1

...  An appreciation of the immensity of geologic time is central to understanding the evolution of the Earth and its’ life.  Geologic time differs from the human perspective of time  Earth goes through cycles of much longer duration than the human perspective of time  The immense span of time encom ...
IGNEOUS ROCK ASSOCIATIONS
IGNEOUS ROCK ASSOCIATIONS

... B. Carbonatites ...
Plate Tectonics - Grade 9 Geography
Plate Tectonics - Grade 9 Geography

... plates of similar densities move together (i.e. a continental plate and a continental plate). This causes the material between them to buckle and rise up, forming fold mountains. The Himalayas are an example of a chain of fold mountains. They have been formed by the African plate colliding into the ...
WebQuest Plate Boundaries…
WebQuest Plate Boundaries…

... Go to you section of slides labeled with Convergent Boundaries. Read through section and answer questions: Draw two plates in you notes & put arrows on the plates to show movement. Formulate a definition for convergent plates. Location where crust is recycled is called what? Name and describe the th ...
Tectonic Plates
Tectonic Plates

... The Earth Is a Dynamic Planet  What is geology?  Three major concentric zones of the earth • Core (Inner) -solid center surrounded by hot liquid • Mantle (Middle)–mostly solid rock • Including the asthenosphere (partially melted) ...
Describing Matter & Energy
Describing Matter & Energy

... Strike-slip fault: the rocks on either side of the fault slip sideways past each other with little up-or-down motion. Normal fault: the hanging wall slips downward past the footwall. Reverse fault: the hanging wall slides up and over the footwall. ...
from continental drift to plate tectonics
from continental drift to plate tectonics

... A pioneering meteorologist and author of an early text on the thermodynamics of the atmosphere, Wegener realized that paleoclimate change could be explained if continents had migrated across climate zones and the reconfiguration of land masses altered Earth's climate patterns.6 However, continental ...
t.7. the earth`s dynamics.
t.7. the earth`s dynamics.

... ________ of fire. Today we know they are really openings or vents to the hot ______ of the planet. About _____ hundred volcanoes around the world are classified as active. Nearly 90 % of these rest in the Ring of Fire, a band circling the _____ ______. Their location is no accident. While the Earth’ ...
Earth`s+Layers+Worksheet+PowerPoint
Earth`s+Layers+Worksheet+PowerPoint

... Outer Core  Lower pressure allows the outer core to remain liquid & move around inner core causes Earth’s magnetic field  Made up of metals  Temperature and pressure are lower in the ...
Earth and Space Science Objective Booklet 4a. Compare and
Earth and Space Science Objective Booklet 4a. Compare and

... 6) What is precipitation? List four forms of precipitation. 7) What is air pressure and how do we measure it? 8) What is humidity and how do we measure it? What is air pressure? How does a high-pressure system form and what type of weather does it produce? How does a low-pressure system form and wha ...
Earth Science Mid Term 2007 Part 1
Earth Science Mid Term 2007 Part 1

... Which cross section below best represents the crustal plate motion that is the primary cause of the volcanoes and deep rift valleys found at mid-ocean ridges? ...
Plate Tectonics Lab II - Mercer Island School District
Plate Tectonics Lab II - Mercer Island School District

... mantle. The lithosphere is approximately 70 km thick under the oceans and perhaps 100-150 km thick under the continents. The lithosphere overlies the plastic asthenosphere. Oceanic lithosphere forms at ocean ridges from rising molten rock; it descends back into the asthenosphere in subduction zones. ...
StudyQuestions3
StudyQuestions3

... 12. Explain how plate tectonic processes can split apart a continent and form a new ocean. Explain how an ocean can close up and have a mountain range form in its place. 13. List the specific types of geologic structures (types of faults, types of folds) that can ...
Sea-floor spreading and deformation processes in the South Atlantic
Sea-floor spreading and deformation processes in the South Atlantic

... fracture zone or flow line. The starved nature of the flow line and the differing age of the oceanic crust across it generates a distinct bathymetric and gravity feature (Figure 2) that can be traced for large distances away from the ridge axis and preserves evidence of former plate tectonic process ...
Earth`s Layers and Density REVIEW Multiple Choice
Earth`s Layers and Density REVIEW Multiple Choice

... space (no gravity) then they have increased a. lithosphere their … b. inner core a. mass. c. lower mantle b. weight. d. crust c. both. 9. If you take a balloon full of air and pushed it d. neither. in on all sides you have not changed its The mantle is a a. mass a. liquid. b. volume b. solid. c. den ...
< 1 ... 191 192 193 194 195 196 197 198 199 ... 530 >

Plate tectonics



Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report