Learn convection currents plate tectonics earth science with free interactive flashcards. Dec 17, 2019 plate tectonics it was from the continental drift theory, convection current theory and the theory of seafloor spreading, the theory of plate tectonics was formulated. In 1967, mckenzie and parker suggested the theory of plate tectonics. Download file pdf enrich convection and the mantle answers enrich convection and the mantle. Choose from 500 different sets of convection currents plate tectonics earth science flashcards on quizlet.
Modeling convection for plate tectonics essential question nsta. Earth science textbook skills lab student worksheets. Convection currents lab students will love you for providing them with a handson experience when learning about convection currents and their formationthe convection currents station lab is a plug and play unit that is meant to accompany my free kesler science station lab series. For instance, some geologists believe that the main factor for the motion of plate tectonics is convection currents that occurs in the mantle. Explain how geologists learn about earths inner structures. Movement of convection currents causes tectonic plates to move several centimeters per year relative to each other. According to the theory of plate tectonics, the earths lithosphere is broken into distinct plates which are. Convection is a process that we talk about a lot in earth science.
The fluid circulation carries thermal energy from the heat source to the other portions of the fluid. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Use lab activities to asses students skill at making qualitative and. Convection also takes place in our atmosphere and is responsible for cloud formation and weather patterns. Convection currents within the earth cause plate tectonics due to the movement of the mantle. Lithosphere the crust and part of the upper mantle 2. Basic features of plates convection in the mantle is bounded above by mechanically strong plates. This movement is found along the midocean ridges where new crust material is being created. Theory of plate tectonics is the idea that the earths crust and upper mantle are broken into sections called plates that move around on the mantle. Start studying convection currents, plate tectonics. If youre behind a web filter, please make sure that the domains. Movement of convection currents causes tectonic plates to. If youre seeing this message, it means were having trouble loading external resources on our website. Mantle convection and plate tectonics article khan academy.
Students are engaged in conversation related to the map features as the teacher facilitates. There are three primary sources of heat within the mantle. Convection currents in the crust and upper mantle cause the movement of the plates. Convection currents and plate tectonics lessons tes teach.
Plan your 60minute lesson in science or earth and space science with helpful tips from kane koller. Mantle convection and plate tectonics lecture by shijie zhong joint mit, harvard and whoi seimnar mantle convection spring 1998 notes prepared by working groups 1 and 2. Mantle convection and plate tectonics are one system, because oceanic. Subsolidus 1 convection of the rocky, 2900kmthick mantle of earth 2isthe driving mechanism for plate tectonics and associated geological activity on the surface of our planet, including continental drift, earthquakes, volcanoes, and mountain building 3. Temperature changes cause these changes in density, creating convection currents. Really fun lab incorporated into plate tectonics solidifying the concept of plate tectonics. Our continents and plates are dragged along on top as the mantle stuff moves underneath. The generation of plate tectonics from mantle convection. The movement of the earths plates can produce earthquakes and volcanoes. Convection currents and plate movement plate tectonics. Convergent plate boundaries are where one plate dives subducts under less dense crust to be recycled back into the asthenosphere. In science my teacher was talking about convection currents and plate tectonics and how convection currents affect plate tectonics. These plates ride on the hot plastic upper mantle called the asthenosphere. The extreme heat in the center of the earth causes convection currents in the asthenosphere which is made of hot molten material on which the lithospheric plates move.
Mantle convection and plate tectonics if youre seeing this message, it means were having trouble loading external resources on our website. Convection currents lab convection is the movement of heat in a liquid or a gas. Primordial heat is the heat left over from the events that created the earths core, radioactive heat is created as radioactive isotopes decay it makes up most of the heat in the mantle, between 5080%, and friction heat is the heat generated by tidal friction as the moon exerts. Students will model and observe the process of convection as it moves within earths crust. Pdf plate tectonics, our major paradigm for how the earth works, was established in the 1960ies. Students use and analyze the map to answer teacherguided questions. The movement of the plates, and the activity inside the earth, is called plate tectonics. Convection currents are one of the three ways to transfer heat energy that works in either a liquid or a gas but can not transfer heat in a solid. The heat transfer function of convection currents drives the earths ocean currents, atmospheric weather and geology. Get an answer for what convection currents give evidence for wegeners theory of plate tectonics. Plate tectonics is a relatively new, wellsupported scientific theory that helps explain. Students are exposed to the idea and a brief demo of convection as the ultimate source of movement in tectonic plates. Convection currents, plate tectonics flashcards quizlet.
Theplategenerationproblem the simple picture of subducting slabs as convective currents works quite well at explaining the driving force for past and present plates 14. Where tectonic plates slide horizontally past each other, the boundary. How are convection currents related to plate tectonics. Earthquakes and volcanoes are the shortterm results of this tectonic movement.
Where convection currents converge, plates move towards each other. Read and learn for free about the following article. Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock. This is often used as a cut and paste or laminate and velcro activity. Students apply the convection current diagram to a lab involving beakers, a hot plate, and food coloring. The longterm result of plate tectonics is the movement of entire continents over millions of years fig.
The motion, or currents, created by convective heat transfer move the tectonic plates. Convection is different from conduction, which is a transfer of heat between substances in direct contact. In addition, just as convection currents occurs in a boiling pan this same. The mantle is a solid that is able to move slowly, often described as flexible like plastic.
Graham cracker plate tectonics lab just a little info the theory of plate tectonics states that the crust of the earth is composed of seven major plates and numerous smaller plates. The movement of these tectonic plates is likely caused by convection currents in the molten rock in earths mantle below the crust. Understanding the movement and behavior of the earths outermost layers has. In this activity you will investigate how convection currents are created and how they move through a liquid or in the case of plate movement, the mantle of earth. Convection currents is related to plate tectonics because it explains the reason why plate tectonics move. You will model convection currents and the movement of tectonic plates.
Plate tectonics is the surface manifestation of mantle convection, but the large contrast in viscosities. Plate tectonics movement of plates, results of plate movement, and the chile triple. Students will apply their understanding of density to plate tectonics, discovering that c onvection currents in the mantle beneath the earths crust cause the tectonic plates to move. What convection currents give evidence for wegeners theory. The continents are part of large lithospheric plates that have moved over geological time and continue to move at a rate of centimeters per year. This is because the mantle is made of semimolten rock called magma. One theory is that convection currents within the earths mantle drive this plate motion. Convection current this is a lab experiment on convection currents. Wind patterns are large scale convection currents in the atmosphere. Exploring plate tectonics convection in the mantle quick tips. G9 tectonics upsc ias plate tectonics,major and minor crustal plates or lithospheric plates duration. Convection currents within the earth cause plate tectonics. Key concepts and process skills key vocabulary labaids.
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