Describe how convection currents might be the cause of plate tectonics. A plate tectonics flip book answers schoolworkhelper. A divergent plate boundary is a tectonic boundary where two plates are moving away from each other and new crust. Divergent boundaries constructive occur where two plates slide apart from each other. There are three different plate boundaries convergent, divergent, and transform. The middle of the red sea and the midocean ridge running the length of the atlantic ocean are divergent plate boundaries divergent boundaries are. As a result of this movement, three types of plate boundaries are formed. This theory explains how crustal plates move around the surface of the earth, and it allows geologists to find explanations for geologic events such as earthquakes and volcanoes, as well as the many other processes that form, transform, and destroy rocks. Along the third type of plate boundary, two plates move laterally and pass each other along giant fractures in earths crust. This upward push results in the formation of volcanic islands.
Describe the effects of plate tectonics found at each type of boundary. Crustal deformation and divergent plate tectonics springer praxis books geophysical sciences on free shipping on qualified orders. Movement in narrow zones along plate boundaries causes most earthquakes. Which was not a result of the baby boom that followed world war ii answers apex. This explains what is plate tectonics theory of divergent boundaries. Plate boundaries this worksheet gives a brief reading selection about the three main plate boundaries. Plate movements are responsible for most continental and ocean floor features and for the distribution of most rocks and minerals within earths crust. Divergent definition before we look at the divergent definition, lets take a look at the meaning of the word it comes from, diverge. Divergent boundaries are those that move away from one another. Divergent plate boundaries are locations where plates are moving away from one another.
The combination has built the island that rises above sea level. Inch by inch, this accounts for incredibly long distances over millions of years. It happens when two tectonic plates pull apart and rock from the mantle rises up through the opening to form new surface rock when. Continents collide creating a supercontinent cycle. Lasagna stephen hawking the titanic palestine ring tailed lemurs slim jims those goosebumps books you read as a kid the mariana trench wait never mind, that is an example of a convergent boundary not sure exactly what you mean in. A divergent boundary is a fault where the two plates are moving away. Plate boundaries are the edge of the tectonic plates. In the theory of plate tectonics, the earths crust is broken into plates that move around relative to each other. Definition of nplate nci dictionary of cancer terms national. The midatlantic ridge is a classic example of this type of plate boundary.
Most divergent boundaries are located along midocean oceanic ridges although some are on land. In plate tectonics, a divergent boundary or divergent plate boundary also known as a constructive boundary or an extensional boundary is a linear feature that exists between two tectonic plates that are moving away from each other. At zones of oceantoocean rifting, divergent boundaries form by seafloor spreading, allowing for the formation of new ocean basin. Plate tectonics definitions 8th grade flashcards quizlet. The earths outer shell, the lithosphere, consisting of the crust and uppermost mantle, is divided into a patchwork of large tectonic plates that move slowly relatively to each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Atlantic ocean is a divergent boundary the continents on each side of the atlantic ocean have been drifting apart forming new seafloor in the atlantic ocean basin for millions of years. Divergent plate boundary definition at, a free online dictionary with pronunciation, synonyms and translation. Plate tectonics, our major paradigm for how the earth works, was established in the 1960ies following decades of observational research that culminated in key.
Plate boundaries can be located by outlining earthquake epicenters. Transform faults are so named because they are linked to other types of plate boundaries. Divergent boundaries, sometimes called constructive boundaries, are places where two or more plates have a net movement away from each other. Subduction zones ring the pacific plate causing frequent earthquakes, volcanic eruptions, and. Himalaya mountains divergent plate boundary europe gondwanaland great rift valley laurasia pangaea south america southern asia the alps the midatlantic ridge. Divergent boundary a divergent boundary forms when two plates diverge. National park service sites in this region showcase blockfault mountains and volcanic features forming as the thick crust stretches and.
Introduction to plate boundaries i hope you have never been in a car accident, but i know. The middle of the red sea and the midocean ridge running the lengt. A plate tectonics flip book answers africa and india antarctica australia breakup of pangaea cenozoic era convergent boundary. In the western part of the continent, divergent plate boundary forces are beginning to rip the continent apart, forming the basin and range province and its adjacent eastern arm, known as the rio grande rift. All the result of convergent, divergent and transform plate boundaries. The areas where these plates meet are known as plate boundaries. Plate boundaries the different types of plate boundaries gcse geography duration. Divergent plate boundary definition of divergent plate. The san andreas connects a divergent boundary in the gulf of california with the.
As the gap between the two plates widen, the underlying layer may be soft enough for molten lava underneath to push its way upward. Convergent plate boundary in terms of plate tectonics, collision boundaries are sites where lithospheric plates move together and the resulting compression causes either subduction where one or both lithospheric plates are driven down and destroyed in the molten mantle or crustal uplifting that results in orogeny mountain building. Hammers, field bags, hand lenses, maps, books, hardness picks, gold pans. Tuzo wilson developed a new theory combined the ideas of continental drift and seafloor. Brian lazos plate tectonics project plate tectonics tectonic plates plates sectioned of earths crust and mantle that move across the earth as stated.
This allows magma to rise up, from between the plates, forming new plate. Lithospheric plates are regions of earths crust and upper mantle that are fractured into plates that move across a deeper plasticine mantle. At a divergent boundary, volcanic activity produces a mid ocean ridge and small earthquakes. Evidence that supports the theory of plate tectonics includes distribution of rock formation and fossils, shapes of existing continents, ocean floor features, and seismic and volcanic activity. A convergent boundary is an area on earth where two or more lithospheric plates collide. Divergent plate boundary dictionary definition divergent. When they separate, they form what is known as a rift. Learn vocabulary, terms, and more with flashcards, games, and other study tools. As the ocean plate splits, the ridge forms at the spreading center, the ocean basin expands. Divergent definition divergent factions book and movie. When the pillow basalt cools it forms new seafloor between the divergent plates.
Iceland is unique because it is situated over a divergent boundary where plates are separating and a hot spot where magma from the upper mantle is feeding the volcanoes. Convergent boundary, divergent boundary and transform boundary are the three types of boundaries that form due to plate tectonic movement. A boundary where the plates are moving away from each other. The most famous example of this is the san andreas fault zone of western north america. Divergent boundary definition of divergent boundary by. Individual patient dose mcg 10 kg x 1 mcgkg 10 mcg. Divergent or constructive plate boundaries the plates diverge and this causes the construction of new rock. In this lesson, you will learn the meaning of the term divergent boundary in the context of plate tectonics. Plate tectonic key terms include continental drift, plate boundaries, major plates, divergent, convergent, transform and crustal features. In terms of plate tectonics, divergent boundaries are areas under tension where lithospheric plates are pushed apart by magma upwelling from the mantle. Plate boundary zones broad belts in which boundaries are not well defined and the effects of plate interaction are unclear.
A divergent boundary is a fault where the two plates are moving away from each other. Illustration of the main types of plate boundaries 55 k divergent boundaries divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle. Divergent boundaries are spreading boundaries, where new oceanic crust is created to fill in the space as the plates move apart. A divergent boundary is one of the plate tectonics. Like other continents, north america has thick crust, compared to the thin crust beneath the adjacent atlantic and pacific oceans. They can occur within a continental plate or an oceanic plate, though the typical pattern is for divergence to begin within continental lithosphere in a process known as rift to drift, described below. Most seismic activity occurs at three types of plate boundaries divergent, convergent, and transform. This lateral flow causes the plate material above to be dragged along in the direction of flow. The subduction zone can be defined by a plane where many earthquakes occur, called the benioff zone. A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the earths surface between the two plates.
The majority of transform faults link the offset segments of oceanic ridges. According to merriamwebster, diverge is a verb that means to extend in different directions from a common point or to become different or differ in opinion. Compare and contrast divergent, convergent, and transform plate boundaries. A divergent plate boundary is the area where two plates are moving away from one another. Divergent boundaries on continents are more rare, but also exist. The ridge is a high area compared to the surrounding seafloor because of the lift from. Compare and contrast divergent, convergent, and book f 43.
In plate tectonics, a divergent boundary or divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each. Most of the earths geologic activity takes place at plate boundaries. The student is then asked to cut out various pictures or words to show understanding of the reading selection and paste into the appropriate location. Describe the characteristic features and processes at. Divergent plate boundary coloring page plate boundaries. Divergent boundaries within continents initially produce rifts which produce rift valleys. What is the definition of the divergent plate boundary. There are different types of convergent plate boundaries with different geologic landforms. A number of features and examples of divergent boundaries will be introduced. The rising current pushes up on the bottom of the lithosphere, lifting it and flowing laterally beneath it. As the plates move past each other, they sometimes get caught and pressure builds up.
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