The concept of plate tectonics is that the lithosphere, which is the higher layers of the Earth’s surface, is separated into a number of plates that float independently over the mantle and along the boundaries that initiate the development of new crust, the building of mountains, and the seismic movement that triggers earthquakes (Geosystems 340). Scientists have discovered that the landforms and geographic regions we know and live on today were formed when plate tectonics shift and create movement
Sea floor spreading and plate boundaries are not a common subject to anyone outside of a scientific or marine biology lab. The purpose of this paper is to identify plate boundaries. Compare and contrast ideas behind plate tectonics and the theory of the continental drift. There are many types of plate boundaries. Each one is unique in its own way. Below three of the primary types are described in detail. There are several natural events that occur as a direct result of plate boundary interaction.
hypothesis that the continents are made of lighter rocks that simply rest on the heavier crust material. Wegner stated that the positions of the continents are slowly moving at the rate of about one yard per century (Infoplease). Wegener’s theory of continental drift was based upon the knowledge that similar animal and plant fossils were found on completely different continents, similar geologic features and the fit of the continents. The problem with Wegener’s theory, was that he had no convincing evidence
Question 1 The idea of Continental Drift to explain the current shape of Earths landmasses was first proposed by Abraham Ortelius in 1596. He proposed the idea to highlight the geometrical coincidences between America and Europe-Africa. In his work Thesaurus Geographicus he suggested that the Americas were “torn away from Europe and Africa…by earthquakes and floods”, and that “the vestiges of rupture reveal themselves, if someone brings forward a map of the world and considers carefully the coasts
Motions of Tectonic Plates Worksheet From Visualizing Earth Science, by Merali, Z., and Skinner, B. J, 2009, Hoboken, NJ: Wiley. Copyright 2009 by Wiley. Adapted with permission. Part 1 This diagram was similar to one Alfred Wegener drew to show the distribution of continents 300 million years ago. His theory of continental drift was met with skepticism in the scientific community. [pic] 1. Describe three forms of evidence Wegener used to support his ideas of continental drift.
ranges, plate tectonics theory explains the features and movement of the Earth’s surface in the past and present. Plate tectonics is the theory that Earth 's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. These plates are like a hard shell over the mantle , and the most outer layer is called the lithosphere. Plate tectonic theory was developed in the 1950’s through the 1970’s. The origins of this theory comes from the continental drift
coastline of Northern California is about 30 million years old. 3) In the Pacific Ocean, where is the oldest oceanic crust located (generally)? The oldest oceanic crust is located along the continental margin, Which is composed mainly of the continental shelf, continental slope and continental rise. 4) In the Pacific Ocean, where is the youngest oceanic crust located? The youngest oceanic crust is located along the mid-ocean ridges where new crust is formed when the old crust is pushed
Motions of Tectonic Plates Worksheet From Visualizing Earth Science, by Merali, Z., and Skinner, B. J, 2009, Hoboken, NJ: Wiley. Copyright 2009 by Wiley. Adapted with permission. Part 1 This diagram was similar to one Alfred Wegener drew to show the distribution of continents 300 million years ago. His theory of continental drift was met with skepticism in the scientific community. 1. Describe three forms of evidence Wegener used to support his ideas of continental drift. • Continental
1. Using the diagram above, explain any 3 of the 6 types of tectonic plate interactions. Note: a larger version of this diagram is located in the CONTENT section of this lesson. 1. Convergent Boundary of two Oceanic Plates: When two oceanic plates collide, one of the plates is subducted under the other during the collision. At the subduction zone, a deep trench is formed in the ocean floor. Oceanic and oceanic plate convergence result in the formation of volcano chains. Over millions of years
Tectonic Plates and its Effects on the Physical Face of the Earth For millions of years, tectonic plates have been determinate of changes in the physical face of the earth, and they continue to do so today. These massive plates move underneath the surfaces of the oceans and the continents, producing earthquakes, volcanoes and uplifts. This paper will discuss the composition, movement and history of tectonic plates, the theory of plate tectonics and its history, and tectonic plates affect the