Name - OnCourse
... Development of a Theory A. Mapping the Ocean Floor 1. Scientists mapped the depth of the ocean floor using a device called a(n) ...
... Development of a Theory A. Mapping the Ocean Floor 1. Scientists mapped the depth of the ocean floor using a device called a(n) ...
Section Quiz
... Directions: Write the letter of the correct answer in each blank. _____ 6. The atmosphere surrounding Earth provides oxygen for a. the core. c. people and animals. b. magma. d. the mantle. _____ 7. What is a landform that usually rises more than 2,000 feet (610 meters) above sea level? a. a plateau ...
... Directions: Write the letter of the correct answer in each blank. _____ 6. The atmosphere surrounding Earth provides oxygen for a. the core. c. people and animals. b. magma. d. the mantle. _____ 7. What is a landform that usually rises more than 2,000 feet (610 meters) above sea level? a. a plateau ...
Vocabulary - Bibb County Schools
... toward each other. 26. Divergent – A boundary between tectonic plates that are moving away from each other. Also called a spreading center. ...
... toward each other. 26. Divergent – A boundary between tectonic plates that are moving away from each other. Also called a spreading center. ...
Plate Tectonics - MsPetersensScienceScholars
... your backyard is now 20 feet away in your neighbor’s yard. 1. What kind of fault line do you probably live on? (You can use the slide before this for reference.) Explain your reasoning. ...
... your backyard is now 20 feet away in your neighbor’s yard. 1. What kind of fault line do you probably live on? (You can use the slide before this for reference.) Explain your reasoning. ...
phase_4_ip_for_sci101
... The Wegener’s hypothesis of continental drift was earlier rejected by scientists because it lacked a mechanism which would have led the continents to drift. He did not explain clearly how the continents moved which would have made it easy to justify the time it took for the present day continents to ...
... The Wegener’s hypothesis of continental drift was earlier rejected by scientists because it lacked a mechanism which would have led the continents to drift. He did not explain clearly how the continents moved which would have made it easy to justify the time it took for the present day continents to ...
3. The Earth system
... Along divergent boundaries two plates are pulled apart and a large valley forms in between. This is a zone where mantle rock rises toward the Earth’s surface and partially melts. Some of the molten rock (magma) solidifies before reaching the surface. Some reaches the surface and forms a volcanic ch ...
... Along divergent boundaries two plates are pulled apart and a large valley forms in between. This is a zone where mantle rock rises toward the Earth’s surface and partially melts. Some of the molten rock (magma) solidifies before reaching the surface. Some reaches the surface and forms a volcanic ch ...
Plate Tectonic Quiz Review
... • Heat transfers by movement of currents in liquids and gasses. This is caused by differences in temperature and density. An example of this type of heat transfer occurs when mantle rock moves from near the core, towards the crust, and back again. A. Radiation B. Conduction C. Convection D. Compact ...
... • Heat transfers by movement of currents in liquids and gasses. This is caused by differences in temperature and density. An example of this type of heat transfer occurs when mantle rock moves from near the core, towards the crust, and back again. A. Radiation B. Conduction C. Convection D. Compact ...
Plate Tectonics
... they spit ash and small bits of lava called lapilli. • Some eruptions are quiet with very fluid (low viscosity) lava flows while others are explosive ...
... they spit ash and small bits of lava called lapilli. • Some eruptions are quiet with very fluid (low viscosity) lava flows while others are explosive ...
The History of the Earth
... drift theory was the inability of its supporters to provide an acceptable mechanism for the movement of continents ...
... drift theory was the inability of its supporters to provide an acceptable mechanism for the movement of continents ...
Classroom Teacher Preparation Earth Science 2: Intro to Tectonics
... This lesson is an introduction to basic plate tectonics. It includes a review of the earth’s internal structure and the formation of continents, oceans, and mountain ranges as a result of plate movement. There will be a discussion of the mechanism of earthquake production as the sudden release of ro ...
... This lesson is an introduction to basic plate tectonics. It includes a review of the earth’s internal structure and the formation of continents, oceans, and mountain ranges as a result of plate movement. There will be a discussion of the mechanism of earthquake production as the sudden release of ro ...
Internal Structure of the Earth
... Crust – the outer, hardest layer of the lithosphere; continental crust (mostly granite, 2.7 g/cm³, 0-40 km) and oceanic crust (basalt 3.0 g/cm³, 010km) Lithosphere – crust and upper most, solid, rigid portion of the mantle – broken into pieces (0-100 km) ...
... Crust – the outer, hardest layer of the lithosphere; continental crust (mostly granite, 2.7 g/cm³, 0-40 km) and oceanic crust (basalt 3.0 g/cm³, 010km) Lithosphere – crust and upper most, solid, rigid portion of the mantle – broken into pieces (0-100 km) ...
PDF file of Lecture 4a - Earth`s Interior and Tectonics
... Lithosphere moves over asthenosphere Subduction recycles lithosphere into Earth’s interior Seafloor spreading adds new material to plate margins (makes new lithosphere) ...
... Lithosphere moves over asthenosphere Subduction recycles lithosphere into Earth’s interior Seafloor spreading adds new material to plate margins (makes new lithosphere) ...
Earth History Study Guide Answers are in RED 1) How has scientific
... c. Transform—earthquakes and faults; ex: San Andreas Fault d. Subduction—volcanoes; ex: Cerro Negro in Nicaragua 11) How do canyons and valleys between mountains form? Weathering and erosion by water (rivers) cause canyons. Weathering and erosion by water or ice (glaciers) cause valleys 12) How do m ...
... c. Transform—earthquakes and faults; ex: San Andreas Fault d. Subduction—volcanoes; ex: Cerro Negro in Nicaragua 11) How do canyons and valleys between mountains form? Weathering and erosion by water (rivers) cause canyons. Weathering and erosion by water or ice (glaciers) cause valleys 12) How do m ...
Name: Date: Pd: __ PLATE TECTONIC WEBQUEST Part A
... 2. In which of Earth’s layers do convection currents happen? _______________________________. 3. When convection currents flow in the mantle, they also move the ____________________________. Part B: Plate Tectonics Go to http://pubs.usgs.gov/gip/dynamic/dynamic.html and Click on the “Historical Pers ...
... 2. In which of Earth’s layers do convection currents happen? _______________________________. 3. When convection currents flow in the mantle, they also move the ____________________________. Part B: Plate Tectonics Go to http://pubs.usgs.gov/gip/dynamic/dynamic.html and Click on the “Historical Pers ...
Slide 1 - Cloudfront.net
... •Mid-ocean ridges are underwater mountain chains that run through Earth’s ocean floor. •There are patterns of magnetism in the sea-floor rocks. ...
... •Mid-ocean ridges are underwater mountain chains that run through Earth’s ocean floor. •There are patterns of magnetism in the sea-floor rocks. ...
practice exam #1
... 43. The continental rise portion of a passive margin consists of _______________________________. 44. Active margins are characterized by all of the following except: (circle one answer) a. Wide continental shelves b. Earthquakes c. Volcanism d. Mountainous coastlines e. Tectonic plate subduction 45 ...
... 43. The continental rise portion of a passive margin consists of _______________________________. 44. Active margins are characterized by all of the following except: (circle one answer) a. Wide continental shelves b. Earthquakes c. Volcanism d. Mountainous coastlines e. Tectonic plate subduction 45 ...
I. Divergent Boundaries A. Moving apart B. Sea Floor spreading at
... b. continental crust, by comparison, has been found up to 3,900 m.a. D. Hot spots—explanation of the data, within framework of plate tectonics model ...
... b. continental crust, by comparison, has been found up to 3,900 m.a. D. Hot spots—explanation of the data, within framework of plate tectonics model ...
Chapter 2
... • Two plate can move in such a way that they slide past each other • Lithosphere is neither created nor destroyed • Shear boundary • Immense friction between the plates • Plates lock, stress builds and then suddenly break free and slip causing and earthquake • Ex. San Andres Fault - California ...
... • Two plate can move in such a way that they slide past each other • Lithosphere is neither created nor destroyed • Shear boundary • Immense friction between the plates • Plates lock, stress builds and then suddenly break free and slip causing and earthquake • Ex. San Andres Fault - California ...
Lecture PDF
... the Mid-Atlantic Ridge, they found bands of weaker and stronger magnetic fields frozen in the rocks. (b) The molten rocks forming at the spreading center take on the polarity of the planet when they are cooling and then move slowly in both directions from the center. When Earth’s magnetic field reve ...
... the Mid-Atlantic Ridge, they found bands of weaker and stronger magnetic fields frozen in the rocks. (b) The molten rocks forming at the spreading center take on the polarity of the planet when they are cooling and then move slowly in both directions from the center. When Earth’s magnetic field reve ...
Name________________________________________
... b. new convergent boundaries form after continents collide. c. heat builds up in Earth’s interior. d. continental lithosphere subducts. ______ 19. What causes a supercontinent to break apart? a. Heat inside Earth causes rifts to form in the supercontinent. b. The convergent boundary between two cont ...
... b. new convergent boundaries form after continents collide. c. heat builds up in Earth’s interior. d. continental lithosphere subducts. ______ 19. What causes a supercontinent to break apart? a. Heat inside Earth causes rifts to form in the supercontinent. b. The convergent boundary between two cont ...
Earth's interior layers.
... • The core is composed mainly of iron and nickel. In the inner core, iron and nickel are solid.Although the inner core is very hot, pressure from the weight of the rest of the Earth doesn’t allowed the material to melt. Iron’s normal temperature of melting is 15350C, but in the earth inner core it c ...
... • The core is composed mainly of iron and nickel. In the inner core, iron and nickel are solid.Although the inner core is very hot, pressure from the weight of the rest of the Earth doesn’t allowed the material to melt. Iron’s normal temperature of melting is 15350C, but in the earth inner core it c ...
DYNAMIC PLANET I
... New crust is formed, moves away from the crest of the ridge • Due to movement of the mantle • Due to downhill slope of the ridge away from the crest ...
... New crust is formed, moves away from the crest of the ridge • Due to movement of the mantle • Due to downhill slope of the ridge away from the crest ...
Lecture 8: Plate Boundaries
... toward a region of cold asthenosphere. The closing ocean is lined by subduction zones and is contracting. The other ocean is opening, and the oceanic lithosphere is connected to the continental lithosphere at both margins. (b) The continental fragments have collided, forming a supercontinent. Subduc ...
... toward a region of cold asthenosphere. The closing ocean is lined by subduction zones and is contracting. The other ocean is opening, and the oceanic lithosphere is connected to the continental lithosphere at both margins. (b) The continental fragments have collided, forming a supercontinent. Subduc ...
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.