12.1 Evidence for Continental Drift
... There was evidence of different climates, (eg. such as glaciers) on warm continents. Like pieces of a jigsaw puzzle, the continents fit together into one, large whole. ...
... There was evidence of different climates, (eg. such as glaciers) on warm continents. Like pieces of a jigsaw puzzle, the continents fit together into one, large whole. ...
12.1 Evidence for Continental Drift How Can Continents Move? Sea
... how entire continents could change locations so his theory was not accepted yet. Eventually, his theory was accepted because: New scientific equipment allowed scientists to measure the slow but steady drift of Earth’s tectonic plates. It was noted that earthquakes and volcanoes appear in certa ...
... how entire continents could change locations so his theory was not accepted yet. Eventually, his theory was accepted because: New scientific equipment allowed scientists to measure the slow but steady drift of Earth’s tectonic plates. It was noted that earthquakes and volcanoes appear in certa ...
Study guide for Mrs
... Inner core Outer core Mantle Crust Subduction boundary/zone Divergent boundary Convergent boundary Transform boundary Mid-ocean ridge Pangaea Lithosphere Tectonic plates B. Know the directions in which the different boundaries move (Remember: “definition disco” divergent…convergent…transform…subduct ...
... Inner core Outer core Mantle Crust Subduction boundary/zone Divergent boundary Convergent boundary Transform boundary Mid-ocean ridge Pangaea Lithosphere Tectonic plates B. Know the directions in which the different boundaries move (Remember: “definition disco” divergent…convergent…transform…subduct ...
Plate Tectonic, Earthquakes, and Volcanoes Test Review
... 12. How do oceanic magnetic stripes provide proof of sea floor spreading? When new oceanic crust is still molten, the magnetic grains will align with the magnetic poles (like a compass). Throughout Earth’s history, the poles have reversed several times, so the direction of alignment changes too. Giv ...
... 12. How do oceanic magnetic stripes provide proof of sea floor spreading? When new oceanic crust is still molten, the magnetic grains will align with the magnetic poles (like a compass). Throughout Earth’s history, the poles have reversed several times, so the direction of alignment changes too. Giv ...
The Earth
... Sources of magma other than those that drive the main convection cells Sources static while lithosphere moves over them Erupt as volcanoes for awhile and form chains (e.g., Hawaiian Islands) Youngest mountain in the chain is closest to the hot spot (big island, Hawaii, most active) Emperor ...
... Sources of magma other than those that drive the main convection cells Sources static while lithosphere moves over them Erupt as volcanoes for awhile and form chains (e.g., Hawaiian Islands) Youngest mountain in the chain is closest to the hot spot (big island, Hawaii, most active) Emperor ...
Tectonic Plate Notes (M)
... denser plate back into the mantle forming ocean trenches. The plate is also burned up and produces volcanoes. This usually occurs along coastlines where continental crust meets oceanic crust. 10. Plate movement can alter Earth systems and produce changes in Earth’s surface such as faulting, earthqua ...
... denser plate back into the mantle forming ocean trenches. The plate is also burned up and produces volcanoes. This usually occurs along coastlines where continental crust meets oceanic crust. 10. Plate movement can alter Earth systems and produce changes in Earth’s surface such as faulting, earthqua ...
Environmental Geology – Fall 2005
... What lines of evidence did Wegener use to support his continental drift hypothesis? Why wasn’t his hypothesis widely accepted by the scientific community? What is apparent polar wander? How is it used to further support ‘drifting continents’? What lines of evidence support the seafloor spreadi ...
... What lines of evidence did Wegener use to support his continental drift hypothesis? Why wasn’t his hypothesis widely accepted by the scientific community? What is apparent polar wander? How is it used to further support ‘drifting continents’? What lines of evidence support the seafloor spreadi ...
File
... the ocean floor, around the edges or within continents three types of plate boundaries are divergent, convergent, & transform fault each plate boundary has a characteristic type of geologic activity ...
... the ocean floor, around the edges or within continents three types of plate boundaries are divergent, convergent, & transform fault each plate boundary has a characteristic type of geologic activity ...
Week 13: Earth Changes W-E-D
... that Earth's surface is broken into a number of shifting plates that are above a hotter, deeper, more mobile zone (mantle) ...
... that Earth's surface is broken into a number of shifting plates that are above a hotter, deeper, more mobile zone (mantle) ...
Chapter 10: Plate Tectonics
... a. Lithosphere: solid, outer layer of Earth that consists of the crust & the rigid upper part of the mantle; 15 to 300 km thick b. Asthenosphere: solid, plastic layer of the mantle beneath the lithosphere; made of mantle rock that flows very slowly, which allows tectonic plates to move on top of it; ...
... a. Lithosphere: solid, outer layer of Earth that consists of the crust & the rigid upper part of the mantle; 15 to 300 km thick b. Asthenosphere: solid, plastic layer of the mantle beneath the lithosphere; made of mantle rock that flows very slowly, which allows tectonic plates to move on top of it; ...
1-2 Notes: Continental Drift Continents Join Together and Split Apart
... Because of this, people disregarded his idea at first. The theory of plate ___________________ built on Wegener’s ideas but also explained HOW plates and their continents move. Evidence from the Sea Floor When ______________________ technology was invented, scientists began mapping the dips an ...
... Because of this, people disregarded his idea at first. The theory of plate ___________________ built on Wegener’s ideas but also explained HOW plates and their continents move. Evidence from the Sea Floor When ______________________ technology was invented, scientists began mapping the dips an ...
Plate Tectonics
... the planet while they are cooling. When Earth’s polarity reverses, the polarity of newly formed rock changes. ...
... the planet while they are cooling. When Earth’s polarity reverses, the polarity of newly formed rock changes. ...
Plate Tectonics Review Sheet
... What was the name of the supercontinent? Pangaea. List and explain evidence that supports the hypothesis of continental drift. fit of continents - the continents fit together like puzzle pieces landforms (mountains) - half of a mountain range was on South American and the other half was on Africa fo ...
... What was the name of the supercontinent? Pangaea. List and explain evidence that supports the hypothesis of continental drift. fit of continents - the continents fit together like puzzle pieces landforms (mountains) - half of a mountain range was on South American and the other half was on Africa fo ...
continental drift / plate tectonics test review
... 9. The scientist who developed the theory of how the continents move apart was ALFRED WEGENER 10. RIDGE-RIFT SYSTEMS are systems of underwater mountains that have a rift valley running through their centers. ...
... 9. The scientist who developed the theory of how the continents move apart was ALFRED WEGENER 10. RIDGE-RIFT SYSTEMS are systems of underwater mountains that have a rift valley running through their centers. ...
test review
... 9. The scientist who developed the theory of how the continents move apart was ALFRED WEGENER 10. RIDGE-RIFT SYSTEMS are systems of underwater mountains that have a rift valley running through their centers. ...
... 9. The scientist who developed the theory of how the continents move apart was ALFRED WEGENER 10. RIDGE-RIFT SYSTEMS are systems of underwater mountains that have a rift valley running through their centers. ...
convection current
... caused by the rising of warmer particles and sinking of cooler particles - Scientists believe it is this action, within the mantle, which is causing the plates to move - The plates that collide, or converge, have one plate above and the other below (these places are called subduction zones) - Subduc ...
... caused by the rising of warmer particles and sinking of cooler particles - Scientists believe it is this action, within the mantle, which is causing the plates to move - The plates that collide, or converge, have one plate above and the other below (these places are called subduction zones) - Subduc ...
Geological Phenomena Plate tectonics
... The Earth’s crust is made up of rigid plates that float on the asthenosphere. ...
... The Earth’s crust is made up of rigid plates that float on the asthenosphere. ...
Plate Tectonics ~ Chapter 19 Assignment
... cause Benioff zones of Earthquakes associated with trenches. It can also produce andesitic volcanoes, which forms volcanoes either on the edge of a continent or in an island arc. 21. Sea floor age – Where do we find the youngest seafloor? Where do we find the oldest sea-floor? The youngest is at the ...
... cause Benioff zones of Earthquakes associated with trenches. It can also produce andesitic volcanoes, which forms volcanoes either on the edge of a continent or in an island arc. 21. Sea floor age – Where do we find the youngest seafloor? Where do we find the oldest sea-floor? The youngest is at the ...
Plate Tectonics - dhsearthandspacescience
... form the Mega Pacific Ocean through tectonic interactions. This Mega ocean will surround the new supercontinent. (~250 000 000 years) ...
... form the Mega Pacific Ocean through tectonic interactions. This Mega ocean will surround the new supercontinent. (~250 000 000 years) ...
Handout 10
... b. region where one plate moves under another _____ 13. transform c. boundary between tectonic plates that are moving away from each other _____ 14. mid-ocean ridge d. undersea mountain range _____ 15. subduction zone e. the boundary between tectonic plates that are colliding 16. A narrow area that ...
... b. region where one plate moves under another _____ 13. transform c. boundary between tectonic plates that are moving away from each other _____ 14. mid-ocean ridge d. undersea mountain range _____ 15. subduction zone e. the boundary between tectonic plates that are colliding 16. A narrow area that ...
Name________________________________________
... b. region where one plate moves under another _____ 13. transform c. boundary between tectonic plates that are moving away from each other _____ 14. mid-ocean ridge d. undersea mountain range _____ 15. subduction zone e. the boundary between tectonic plates that are colliding 16. A narrow area that ...
... b. region where one plate moves under another _____ 13. transform c. boundary between tectonic plates that are moving away from each other _____ 14. mid-ocean ridge d. undersea mountain range _____ 15. subduction zone e. the boundary between tectonic plates that are colliding 16. A narrow area that ...
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.