Continental Drift
... plates move toward each other. The two plates hit and deform the crust. Tends to cause volcanoes and earthquakes ...
... plates move toward each other. The two plates hit and deform the crust. Tends to cause volcanoes and earthquakes ...
Evidence of continental drift
... Same type and ages of rocks found on Africa and South America Seafloor Spreading- new rock created along the ocean floor Paleomagnetism- shows a pattern of identical pole reversal on both sides of a spreading center. The Dwyka Tillite (rocks layers shown) correlates with similar rocks in South Ameri ...
... Same type and ages of rocks found on Africa and South America Seafloor Spreading- new rock created along the ocean floor Paleomagnetism- shows a pattern of identical pole reversal on both sides of a spreading center. The Dwyka Tillite (rocks layers shown) correlates with similar rocks in South Ameri ...
Chapter 1—Plate Tectonics and California
... sketch, label the following: oceanic trench, volcanic arc, where magma is forming, a batholith and the accretionary wedge. Describe what each one is. Use several “X’s” to show where earthquakes would occur. Use arrows to show how the plates are moving with respect to one another. 5. Draw a sketch of ...
... sketch, label the following: oceanic trench, volcanic arc, where magma is forming, a batholith and the accretionary wedge. Describe what each one is. Use several “X’s” to show where earthquakes would occur. Use arrows to show how the plates are moving with respect to one another. 5. Draw a sketch of ...
Plate Tectonic Mapping Assignment
... Using the world map complete the following tasks. If you don’t have the specific colours indicate on the legend what each colour represents. ...
... Using the world map complete the following tasks. If you don’t have the specific colours indicate on the legend what each colour represents. ...
the theory of continental drift
... The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. It wasn't until 1928 that a ...
... The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. It wasn't until 1928 that a ...
Chapter 4
... 3. As molten rock rises from the rift in an MOR, it quickly cools and hardens and its magnetic orientation becomes fixed. ...
... 3. As molten rock rises from the rift in an MOR, it quickly cools and hardens and its magnetic orientation becomes fixed. ...
Section 22.4 Plate Tectonics IPLS
... 1. Is the following sentence true or false? According to the theory of plate tectonics, Earth’s plates move about quickly on top of the crust. 2. Circle the letters of the characteristics of Earth’s plates that the theory of plate tectonics explains. a. composition b. formation c. movement ...
... 1. Is the following sentence true or false? According to the theory of plate tectonics, Earth’s plates move about quickly on top of the crust. 2. Circle the letters of the characteristics of Earth’s plates that the theory of plate tectonics explains. a. composition b. formation c. movement ...
File
... collected by drilling into the oceanic crust. Tests show that younger rock is closer to the MidAtlantic Ridge and older rock is closer to the continents. 7) These new technologies indicated that Earth’s crust is ______________________________. 8) When magma rises from an ocean ridge, the magma produ ...
... collected by drilling into the oceanic crust. Tests show that younger rock is closer to the MidAtlantic Ridge and older rock is closer to the continents. 7) These new technologies indicated that Earth’s crust is ______________________________. 8) When magma rises from an ocean ridge, the magma produ ...
divergent boundary. Results in volcanos and seafloor spreading
... Mid-ocean ridges occur at areas of seafloor spreading Mid-ocean ridges are underwater mountain chains ...
... Mid-ocean ridges occur at areas of seafloor spreading Mid-ocean ridges are underwater mountain chains ...
Tectonic Plates - Louis Pasteur MS 67 Science Department Resources
... Literacy Fusion Article: “Earth's tectonic plates have doubled their speed” SO MUCH for slowing down as you age. Earth's tectonic plates are moving faster now than at any point in the last 2 billion years, according to the latest study of plate movements. But the result is controversial, since previ ...
... Literacy Fusion Article: “Earth's tectonic plates have doubled their speed” SO MUCH for slowing down as you age. Earth's tectonic plates are moving faster now than at any point in the last 2 billion years, according to the latest study of plate movements. But the result is controversial, since previ ...
Continental Drift and Plate Tectonics Part 1 Multiple Choice
... 24. Which of the following was the biggest problem with Wegener's Theory of Continental Drift? a. He could not explain the mechanism for movement of the continents b. Too many scientists already came up with the same theory c. All of his evidence turned out to be fake 25. Which two mountain ranges a ...
... 24. Which of the following was the biggest problem with Wegener's Theory of Continental Drift? a. He could not explain the mechanism for movement of the continents b. Too many scientists already came up with the same theory c. All of his evidence turned out to be fake 25. Which two mountain ranges a ...
Plate Tectonics Review Sheet
... Name ________________________ Period ____ Test Date: April 25, 2017 ...
... Name ________________________ Period ____ Test Date: April 25, 2017 ...
planetearthnotes - hrsbstaff.ednet.ns.ca
... mtns. erode sediment is dumped into lowlands on both sides like in phase three of our notes – weight builds up on the crust there and it begins to sag – when it drops under the force of excess weight, an earthquake is the result – old faults are the weak points in the rock structures where the movem ...
... mtns. erode sediment is dumped into lowlands on both sides like in phase three of our notes – weight builds up on the crust there and it begins to sag – when it drops under the force of excess weight, an earthquake is the result – old faults are the weak points in the rock structures where the movem ...
Name _________________________________ ... 38. How can volcanoes be destructive?
... 46. While rock was still molten, what did the iron particles do in order to create this pattern of magnetic polarity? ...
... 46. While rock was still molten, what did the iron particles do in order to create this pattern of magnetic polarity? ...
Earth`s surface consists of a number of rigid, but moving, pieces
... Chapter 4 Notes – Section 4.1 – Continental Drift Earth’s surface consists of a number of ____________, but moving, pieces called _______________. ...
... Chapter 4 Notes – Section 4.1 – Continental Drift Earth’s surface consists of a number of ____________, but moving, pieces called _______________. ...
Plate Tectonics
... • Get into teams of three • Each person will focus on one type of boundary – divergent (Column A) – convergent (Column B) – transform (Column C) ...
... • Get into teams of three • Each person will focus on one type of boundary – divergent (Column A) – convergent (Column B) – transform (Column C) ...
Planetary Geology (part of Chapter 9): Geology of Mercury, Venus
... stream-lined islands, channels, and finely layered rocks are all evidence for liquid water flowing on Mars in the past. There is some evidence for small amounts of liquid water on/near the surface today. Venus has experienced little erosion, despite its thick atmosphere, because rain doesn’t reach t ...
... stream-lined islands, channels, and finely layered rocks are all evidence for liquid water flowing on Mars in the past. There is some evidence for small amounts of liquid water on/near the surface today. Venus has experienced little erosion, despite its thick atmosphere, because rain doesn’t reach t ...
Evidence of continental drift
... Fossil evidence- dinosaurs and plants on Antarctica Same type and ages of rocks found on Africa and South America Seafloor Spreading- new rock created along the ocean floor Paleomagnetism- shows a pattern of identical pole reversal on both sides of a spreading center. The Dwyka Tillite (rocks layers ...
... Fossil evidence- dinosaurs and plants on Antarctica Same type and ages of rocks found on Africa and South America Seafloor Spreading- new rock created along the ocean floor Paleomagnetism- shows a pattern of identical pole reversal on both sides of a spreading center. The Dwyka Tillite (rocks layers ...
Unit Day 1
... rocky, plastic mantle; and a rocky, brittle crust. Relative plate motions and plate boundaries are convergent (subduction and continental collision), divergent (sea floor spreading), or transform. Ocean crust is relatively thin, young, and dense. Continental crust is relatively thick, old, and less ...
... rocky, plastic mantle; and a rocky, brittle crust. Relative plate motions and plate boundaries are convergent (subduction and continental collision), divergent (sea floor spreading), or transform. Ocean crust is relatively thin, young, and dense. Continental crust is relatively thick, old, and less ...
Solid Earth - SchoolNova
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
Plate Tectonics
... Oceanic Ridges and Seafloor Spreading * _____________ ridges are continuous elevated zones on the floor of all major ocean basins. The rifts at the crest of ridges represent divergent plate boundaries. * ________ valleys are deep faulted structures found along the axes of divergent plate boundaries. ...
... Oceanic Ridges and Seafloor Spreading * _____________ ridges are continuous elevated zones on the floor of all major ocean basins. The rifts at the crest of ridges represent divergent plate boundaries. * ________ valleys are deep faulted structures found along the axes of divergent plate boundaries. ...
Continental-Drift-and-Seafloor-Spreading
... 4. Tropical plant fossils that were found on an island in Artic Ocean! (Scratches in rocks made by glaciers in South Africa) The continental drift theory was NOT accepted because Wegener could not explain HOW the continents were moving/drifted apart. ...
... 4. Tropical plant fossils that were found on an island in Artic Ocean! (Scratches in rocks made by glaciers in South Africa) The continental drift theory was NOT accepted because Wegener could not explain HOW the continents were moving/drifted apart. ...
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.