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Name: ______*Key___ !Block____ Date_*4/27/15! PLATE TECTONICS TEST 1 ES1 ! Plate! Part I- True/False. Read each sentence carefully. Circle the best answer: true or false, & correct it withTectonics more information, not just a negative (like “not” or “doesn’t”), or crossing out.. all 2 pts@ unless noted . CHECK WORK! ! ! ! ! ! ! ! ! ! ! ! ! True False 1. The magnetic north pole is sometimes located *near at the geographic north pole, where all the lines of longitude meet *sometimes near the south pole. DISC! True False 2. Europe and the United States are moving apart at a rate of 1 to 3 cm/year.! True False 3. A possible age of ocean crust is 150 million years old. DISC! True False 4. Moving currents in asthenosphere causes the plates to move. DISC! True False 5. Earthquakes intensity is measured by the Richter scale.! yay, bonus pt. because________ oops, no HO, book, heading on this date______=MP True False 6. Earthquakes are formed along transform boundaries! ! *or volcanoes along plate boundaries.! True False 7. Oceanic crust is subducted under continental crust because it is denser! True False 8. The epicenter of an earthquake is the point on the surface above where the ! ! vibrations start.! ! ! True False 9. The stopping of secondary waves prove that the outer core is liquid! True False 10. Earthquakes are located by the lag-time between P & S waves from a minimum of 3 seismographs.! True False 11. The Hawaiian Islands are being formed at a hot spot! 12. Explain concisely why Wegener’s theory of continental drift was rejected:*couldn’t explain how they moved through ocean crust (suggested centripetal and tidal lunar forces, much too weak) DISC! 13. What is explosive lava, dust and rocks from a cinder volcano called? pyroclastic flow! It is so explosive because: thick lava plugs vent, pressure builds up until explodes DISC! Part II. Multiple Choice Please write in CAPITALS the letter of the the best answer 14 - 26 = 1 pt. @! ! _*A__14. The Appalachians, Berkshires, and White Mts. along the east coast of the ! ! formed at an ancient ! a. convergent plate boundary ! b. transform fault boundary! c. divergent plate boundary d. none of these! ! US! ! _*D__15. Earthquakes occur along this type of boundary:! A. convergent plate boundaries B. divergent plate boundaries! C. transform fault boundaries! D. all kinds of boundaries ! ! *B__16. Two plates move past each other and crust is neither created nor destroyed along:! a. convergent plate boundaries b. transform fault boundaries! c. divergent plate boundaries! d. deep ocean trenches! ! ! _*E___17. . Pangaea is: a. a fossil found in Africa and South America! b. German for “plate tectonics”! ! c. a supercontinent formed about 300 mya! d. “all lands”! ! ! e. C & D! ! ! ! __*D__18. Where plates converge, _______ may occur.! A. volcanoes B. a subduction zone! C. earthquakes D. all of these! ! ! _*B__ 19. The start of the separation of two continents forms a! ! a. convergent boundary! b. rift valley c. mid-ocean ridge! d. transform fault! 32 ! pts off before this page____ spelling____Extra Credit____ pg 1 of 4 Sanders-Fleming ES1 Plate Tect Test 4/27/15 2:21 PM ___*B__20.About when did Pangaea start to split apart? DISC! ! a. 150 million years ago! b. 250 million years ago c. 450 million years ago! d. 550 million years ago! ! ! _*D___21. One or 2 of the layers of the earth move as part of plate tectonics. Which one(s)?! ! a. liquid outer core! b. lithosphere c. asthenosphere! ! d. B & C! ___*A__22. Paleomagnetic reversals! a. provide strong evidence of seafloor spreading c. cause the movement of plates! ! ! b. confirmed the existence of subduction zones! d. are unrelated to plate tectonics! __*C__23. Which movement formed the Hawaiian islands?! ! ! A. Two plates spreading apart!! B. Two plates coming together! C. The center of a plate passing over a fixed magma plume in the mantle! D. Two plates sliding by each other.! ! ___*E__24.A deep ocean trench might be formed at a:! a. divergent boundary! ! b. convergent (oceanic-oceanic) boundary DISC! c. convergent (continent-continent) boundary! d. convergent (oceanic-continent ) boundary e. B&D! ! __*B___25. Which of these features is not directly produced by the movement of plates?! ! a. mountains! ! b. sedimentary rock! ! c. earthquakes ! d. volcanoes! ! ! ___*D__ 26. If maps of the world plotting earthquakes and volcanoes are compared, one sees: DISC! a. that both are randomly scattered over the earth's surface! b. that earthquakes and volcanoes often occur in the same area! c. that they both occur along plate boundaries d. both b and c ! ! 27. (2 pts) Briefly explain why the earth’s surface might be flat without plate tectonics:! *no mountains, islands, rift valleys or deep ocean trenches would be formed by moving plates! ! Use the cross section diagram below to answer the following five questions. The numbers above the diagram correspond to the points directly below them. Use these numbers to answer the questions. Give the best answers. All remaining questions are 2 points unless marked.! 9.5 ! 28. At which two numbers would volcanoes occur?___*9.5__ and ___*3_ (9, 10,11 1/2)___! ! ! ! 29. At what two numbers would the oldest crust be found?__*7___ and ___*8 (6, 9-11 1/2)_ DISC! 30. ( 1 pt.) At what number is a convergent plate boundary located?____*11__! ! 31. At which two numbers would rocks of the same age be found?_*1 and 5__ OR _*2 and 4_! 32. (1 pt.) Briefly explain the source of the heat which drives convection in the asthenosphere:! radioactive breakdown in the core releases heat from below, causing solid to rise, move sideways, cool, and49 sink.! pts off before this page____ spelling____Extra Credit____ pg 2 of 4 Sanders-Fleming ES1 Plate Tect Test 4/27/15 2:21 PM Part III: Short answer. Be concise yet complete,(brief) and use labeled diagrams if helpful.! 33. a. Define the “Ring of Fire” with its location and b. explain why it’s there.! a.chain of volcanic islands and mountains. around east, north and west of Pacific Plate, ! ! b. caused by convergent boundaries! 34.(3 pts) Describe in 3 steps volcanic island arcs forming & d.why curved.(NOT HOT SPOTS)! a. *2 oceanic plates converge! b.*one plate subducts under other, part is melted into magma! c*magma rises from plate as volcanoes in ocean=islands, arc,! D. because plate edges subduct into round earth leaving curved edge! ! 35 (5 pts.).Give the 5 earth layers in order from the surface, with the state of matter of each, & which is thickest & thinnest. One layer is is part of 2 other layers, and one layer is divided into 2 types, all of which you should name.! a.*lithosphere or crust, thinnest, solid; oceanic and continental! b. *asthenosphere, solid that flows, bottom crust/top mantle! c.*mantle-thickest, solid! d.*outer core-liquid! e.*inner core-solid! ! ! ! ! 36. (2 pts.) a. About how many large plates are there?_*7-10__about how many total?_*30_ ! c. Which type of lithospheric layer is thicker?_________ continental _______ Which is denser?___ oceanic ! 37. (6 pts.) Explain a. the mechanism that causes plates to diverge (2 pts):! *rising convection current in asthenosphere NOT MAGMA! b. what causes new seafloor to form (2 pts)*magma rises at diverging boundary and forms seafloor! Explain 2 strong, DIFFERENT pieces of evidence that show that spreading occurs symmetrically from the midocean ridge (1 pt @) ! c.*symmetrical stripes of reversed polarity match on either side of ridge! ! ! ! ! ! d.*matching stripes of rock ages on either side of ridge, youngest at ridge, ages toward continent! 38. ( 6 pts.) Describe and compare the slope and formation of the 3 types of volcanoes ! Shield: slope:*wide and flat formed from: thin (low viscosity) lava! Cinder slope::*steep because formed from: cinders, thick lava which plugs vent, ashes! Composite or strato-slope:*steep slope, tall formed from: layers of lava/cinder&ashes (pyroclastics)! 39. (5 pts.) a. Explain how a hot spot forms an island chain, and why the chain is not an arc: (3 pts)*fixed plume of magma in upper mantle makes volcanoes, plate moving, usually straight, over hot spot carries the oldest islands away and new ones are formed in a straight line! b.. Where in the hot spot island chain are the rocks oldest? *farthest from hot spot! ! ! ! c.. Which islands in the chain are smallest and why? (1 pt) oldest islands, most weathered and eroded! Give two examples of hot spots. a.*Iceland, Galapagos! b.*Hawaii, Yellowstone! 40. (4 pts.) Name and briefly explain the four types of evidence for continental drift! 82 a.*matching fossils on continents separated by oceans show the continents were once together! ! ! ! b.*similar rock types & mountains on continents and not on separating oceans show the continents were together! ! c.*evidence of climates now gone (glaciers in Africa, coal in Arctic) show the continents were in different latitudes! ! d.*coastlines of some continents fit like a puzzle, showing the continents were together! pts off before this page____ spelling____Extra Credit____ pg 3 of 4 Sanders-Fleming ES1 Plate Tect Test 4/27/15 2:21 PM ! ! 41. (1 pt.) Briefly explain the source of the heat which drives convection in the asthenosphere:! Part IV. Map and diagrams For # 42 to 46, give one example each on the map on pg. 5.! On the map, write the NUMBER of the question, and the specific type of feature or process AND types of boundary AND plates in the nearby margin with an arrow to the location (ex. rift valley/divergent continental:continental plate). Its proper name (“Great Rift Valley”) without the type of feature or boundary is not enough, though you may include it. Names on the map are to help you find your place. You may use the places marked on the map, or others. Make sure I can read both the number and feature (write in the margin and use draw an arrow ). Ask if needed! EXAMPLE, labeled Part III examples IS AT RIGHT OF MAP: An inland valley formed by two continental plates that started to diverge, but didn’t continue. 3 pts @ ! ! 42. A curved chain of volcanic islands and the type of boundary that forms it. (PLACE YOUR ANSWERS ON THE MAP--NOT HERE!) Done*√_ pts .____! 43. The edges of two ocean plates spreading apart and the type of mountain range formed. Done*√_ pts .____! 44. A feature formed by two continental plates crashing into each other. Done____*√_ pts .______! 45. A geologic process (not a physical feature) caused at a boundary where plates slip laterally (sideways) against each other. Done__ √_ pts .____! 46. A range of volcanoes on land formed from ocean crust diving under continental crust. Done_ √__ pts ._____! !! !! !! !! ! !! !! ! !! !! ! ! !! !! ! ! CHECK YOUR WORK! Extra Credit, up to 1 pt. each! 1. Label 6 or more of the large tectonic plates on your map! 2. Explain thoughtfully, with facts, up to 2 other ideas you studied for this quiz from the review or notes which were not included at all on quiz.! Name______________________After the test is discussed, fill this out if needed. ! 1. Mrs. S-F please check questions #______________________!! ! ! ! ! ! ! ! ! ! ! Correct spelling errors here 3 times each for points back or bonus points! ! ! teacher fills out this for quiz total:! points off______ extra credit_______ misspellings ________=________/96=________% Grade___ ! 96 pts off before this page____ spelling____Extra Credit____ pg 4 of 4 Sanders-Fleming ES1 Plate Tect Test 4/27/15 2:21 PM