Indicate the answer choice that best completes the statement or
... 26. The youngest rocks on the ocean floor are located ____. a. near continents b. at mid-ocean ridges c. far from mid-ocean ridges d. near Asia 27. The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's ____ has reversed itself several times in the ...
... 26. The youngest rocks on the ocean floor are located ____. a. near continents b. at mid-ocean ridges c. far from mid-ocean ridges d. near Asia 27. The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's ____ has reversed itself several times in the ...
Name: Plate Tectonics Test Date:______ Completion
... 2. _________________________ is the theory that the Earth's lithosphere is divided into tectonic plates that move around on top of the asthenosphere. 3. Earth's ____________________ is liquid. (inner core or outer core) 4. The asthenosphere is the layer of the Earth just below the __________________ ...
... 2. _________________________ is the theory that the Earth's lithosphere is divided into tectonic plates that move around on top of the asthenosphere. 3. Earth's ____________________ is liquid. (inner core or outer core) 4. The asthenosphere is the layer of the Earth just below the __________________ ...
Ch. 21 - Tri-City
... They say that plates are driven by the force of gravity acting on their own massive weight ...
... They say that plates are driven by the force of gravity acting on their own massive weight ...
Unit 5 - Structure and Composition of the Earth
... more crust is formed, the ocean basin expands and a ridge system is created. • Divergent boundaries are responsible in part for driving the motion of the plates. ...
... more crust is formed, the ocean basin expands and a ridge system is created. • Divergent boundaries are responsible in part for driving the motion of the plates. ...
The Structure of the Earth
... • Outer layer, very thin • Two types of crust: –Continental Crust (land) – thicker & less dense –Oceanic Crust (land under the ocean) -thinner and more dense ...
... • Outer layer, very thin • Two types of crust: –Continental Crust (land) – thicker & less dense –Oceanic Crust (land under the ocean) -thinner and more dense ...
Chapter 17 Plate Tectonics
... Applying Scientific Methods (20 points) Scientists have studied the motions of Earth’s tectonic plates and recorded many of their findings as maps. Based on the assumption that the direction and rate of plate movement taking place today will continue for the next 50 million years, researchers have m ...
... Applying Scientific Methods (20 points) Scientists have studied the motions of Earth’s tectonic plates and recorded many of their findings as maps. Based on the assumption that the direction and rate of plate movement taking place today will continue for the next 50 million years, researchers have m ...
Abyssal plain- very level area of the deep ocean floor, usually lying
... Hypothesis - a tentative explanation that is tested to determine of it is valid. Inner core - solid innermost layer of the earth about 1300 km.’s (800 miles in radius) Interface - common boundary where different parts of a system interact. Lithosphere - rigid outer layer of earth including crust and ...
... Hypothesis - a tentative explanation that is tested to determine of it is valid. Inner core - solid innermost layer of the earth about 1300 km.’s (800 miles in radius) Interface - common boundary where different parts of a system interact. Lithosphere - rigid outer layer of earth including crust and ...
MS Unit 2 Part 2 Plate Tectonics
... • When two oceanic plates collide, one (the older, more dense one) subducts under the other.. • The subducting plate is forced downward to form a very deep depression in the ocean floor called a trench. • The worlds deepest parts of the ocean are found along trenches. (Mariana Trench is 35,840 ft!) ...
... • When two oceanic plates collide, one (the older, more dense one) subducts under the other.. • The subducting plate is forced downward to form a very deep depression in the ocean floor called a trench. • The worlds deepest parts of the ocean are found along trenches. (Mariana Trench is 35,840 ft!) ...
3.0 Landforms provide evidence of change
... (a Canadian Scientist) helped form this new theory, by suggesting the plates slide past each other. This type of movement is seen at a transform boundary. ...
... (a Canadian Scientist) helped form this new theory, by suggesting the plates slide past each other. This type of movement is seen at a transform boundary. ...
Plate Tectonics
... Directions: On the line before each description, write the letter of the term that matches it correctly. Terms will be used more than once. ...
... Directions: On the line before each description, write the letter of the term that matches it correctly. Terms will be used more than once. ...
Study Guide for Geology Exam 2016
... 20. The plates move due to what going on inside the earth? 21. List the three plate boundaries and illustrate them with arrows (be sure to label ALL!). ...
... 20. The plates move due to what going on inside the earth? 21. List the three plate boundaries and illustrate them with arrows (be sure to label ALL!). ...
plate tectonics 2009..
... Plates movement: moving towards, away from or sideways along adjacent plates It is at plate boundaries that most of the world’s major landforms occur, and where earthquakes, volcanic and mountain zones are located. ...
... Plates movement: moving towards, away from or sideways along adjacent plates It is at plate boundaries that most of the world’s major landforms occur, and where earthquakes, volcanic and mountain zones are located. ...
Ch19_PlateTectonics
... symmetrically oriented about ridges? A) Rates of plate motions on the two divergent plates are the same for both plates B) Magma is intruded into the centers of spreading ridges and then pulled apart in the middle C) Convective cells in the mantle transfer heat and move rock straight up beneath ridg ...
... symmetrically oriented about ridges? A) Rates of plate motions on the two divergent plates are the same for both plates B) Magma is intruded into the centers of spreading ridges and then pulled apart in the middle C) Convective cells in the mantle transfer heat and move rock straight up beneath ridg ...
1. Earth Science a. Branches i. Geology—study of rocks, minerals
... ii. Consequence is younger oceans, older continents c. Continents are higher, and older, because they are less dense i. Margin at edge of oceanic crust is below sea level ii. Shelf is part of continent, just too much water to let it be above sea level. d. Places where crust is torn apart, there is a ...
... ii. Consequence is younger oceans, older continents c. Continents are higher, and older, because they are less dense i. Margin at edge of oceanic crust is below sea level ii. Shelf is part of continent, just too much water to let it be above sea level. d. Places where crust is torn apart, there is a ...
Chapter 5 Review
... If the statement is true, write true. If it is false, change the underlined word or words to make the statement true. (6)Continental crust is made of rocks such as granite. (7)Slow movements of mantle rock called radiation transfer heat in the mantle. (8)The single landmass that broke apart 250 mill ...
... If the statement is true, write true. If it is false, change the underlined word or words to make the statement true. (6)Continental crust is made of rocks such as granite. (7)Slow movements of mantle rock called radiation transfer heat in the mantle. (8)The single landmass that broke apart 250 mill ...
Plate Tectonics
... An oceanic plate converges on a continental plate and the denser crust of the oceanic plate sinks beneath the morebuoyant continental plate. In this type of convergence, trenches, strong, destructive earthquakes and the rapid uplift of mountain ranges are common The magma that results when the ocean ...
... An oceanic plate converges on a continental plate and the denser crust of the oceanic plate sinks beneath the morebuoyant continental plate. In this type of convergence, trenches, strong, destructive earthquakes and the rapid uplift of mountain ranges are common The magma that results when the ocean ...
Document
... theory of continental drift and plate tectonics Three main types of plate boundaries- fun activity Volcanoes and earthquakes ...
... theory of continental drift and plate tectonics Three main types of plate boundaries- fun activity Volcanoes and earthquakes ...
Layers of the Earth
... The crust is the thin, rocky, outer-layer on which we live. This is the thinnest layer, but oceans and continents sit on the crust. The crust is not solid—it is actually broken into pieces we call “plates.” ...
... The crust is the thin, rocky, outer-layer on which we live. This is the thinnest layer, but oceans and continents sit on the crust. The crust is not solid—it is actually broken into pieces we call “plates.” ...
5-Continental Drift and Plate Tectonics
... He named them guyots, but found them very puzzling:They looked like their tops were eroded, but they were 2 kilometers under water. ...
... He named them guyots, but found them very puzzling:They looked like their tops were eroded, but they were 2 kilometers under water. ...
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.