chapter 18 short answer. The two sub-layers of the earth's crust (lithosphere) that move,float&sometimes fracture & whose interaction causes continental drift, earthquake, volcanoes, mountains & oceanic trenches The movement's rate has been determined to be approximately 5 - 10 cm per year (2 - 6 inches per year), depending on location of the plates. You can change your answer if you want. Plate tectonics is a combination of two ideas, sea-floor spreading and continental drift. 'pertaining to building') is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago. Plate tectonics is a theory of geology.It explains movement of the Earth's lithosphere: this is the earth's crust and the upper part of the mantle.The lithosphere is divided into plates, some of which are very large and can be entire continents.. Heat from the mantle is the source of energy driving plate tectonics. ... the volcanoes in the Circum-Pacific Belt formed as a result of magma rising upward in faults and fractures that form as tectonic plates diverge.

The composure of the two types of plate is also quite different. Under the plates is a weaker layer of partially melted rock. In 1969, spreading plate margins became part of the theory of plate tectonics. Unit 1.6: Earth and Space Science – Plate Tectonics H. Turngren, Minnesota Literacy Council, 2013 p.9 GED Science Curriculum SCIENCE Unit 1.6 Handout 1 TEACHER ANSWER KEY (Note, answers may vary) Read the information from the passages on Plate Tectonics to answer … A tectonic plate is a huge, unevenly formed slab of solid rock, made of both continental and oceanic lithosphere, which includes the crust and outer part of the mantle. A comprehensive database of more than 52 plate tectonics quizzes online, test your knowledge with plate tectonics quiz questions. Flashcards. Instructions: To take the quiz, click on the answer. Let's take this quiz to find out! Continents that fit together like puzzles display how far tectonic plates have moved. Learn. Plate Tectonics section 4 Short Answer Q's Due No Due Date Points 12; Submitting a text entry box; Reference section 4 of the plate Tectonics chapter to answer these questions- please copy and paste the questions into your answer box at the bottom of this page. The plates are … The circle next to the answer will turn yellow. Plate Tectonic Theory states that the Earth's outer layer is fragmented into plates that are in constant motion. The seven major plates include the African, Antarctic, Eurasian, North American, South American, India-Australian, and the Pacific plates. This is a list of tectonic plates on the Earth's surface.Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere.The plates are around 100 km (62 mi) thick and consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium). All the best! The plates are made of solid rock. An easy way to define tectonic plates for kids is to think of giant slabs of land floating over the Earth's mantle. Exactly how this works is still a matter of debate.

Plate Tectonics: Help and Review Chapter Exam Instructions. About this quiz: All the questions on this quiz are based on information that can be found at Earth Science: Plate Tectonics. Our online plate tectonics trivia quizzes can be adapted to suit your requirements for taking some of the top plate tectonics quizzes. The tectonic plates are about 100 km (60 miles) in thickness, with continental plates tending to be thicker than oceanic ones. 1. For webquest or practice, print a copy of this quiz at the Earth Science: Plate Tectonics webquest print page. Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός "pertaining to building") is a scientific theory which describes the large scale motions of Earth's lithosphere.

The creation of new oceanic crust at mid-ocean ridges is called sea-floor spreading. Short answer: Plate thickness varies greatly, ranging from less than 15 km for young oceanic lithosphere to about 200 km or more for ancient continental lithosphere (for example, the interior parts of North and South America). A divergent boundary occurs when two tectonic plates move away from each other. This quiz has been designed to test your knowledge about tectonic plates and scientific theory. Tectonic plates are pieces of the rocky outer layer of the Earth known as the crust. 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. The Earth’s lithosphere, which includes the crust and upper mantle, is made up of a series of pieces, or tectonic plates, that move slowly over time.

The theory, or idea, of plate tectonics says that Earth ’s outer layer is made up of large, moving pieces called plates. The area where two plates meet is called plate boundaries. Plate tectonics (from the Late Latin: tectonicus, from the Ancient Greek: τεκτονικός, lit. All of Earth’s land and water sit on these plates. Choose your answers to the questions and click 'Next' to see the next set of questions. Oceanic plates consist of thicker basaltic rocks, compressed by the pressure of kilometers of water.

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