yay, bonus pt. because oops, no HO, book, heading this Map: 15 pts., key 1 pt. 2. Glaciation 1. Geologic Provinces (rock types)

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1 Plate Tectonics Name: Block: Date Due Check website handout version for new hints &/or changes in red Reconstructing Pangaea: HW #2 (15 pts- not eligible for skip pass) INTRODUCTION No Makeup, do! Check website handout version for new hints &/or changes in red In the early 1900s, Alfred Wegener, a German meteorologist and astronomer, suggested that the continents may have once been joined together in a single landmass. He called this supercontinent PANGAEA, a word that means all land or all earth. Wegener was not the first person to notice the apparent jigsaw puzzle fit of the continental coastlines, but he was the first really to begin to collect evidence and build a scientific case to support his idea. Purpose: to construct a map of Pangaea based on some of the physical and fossil evidence used by Wegener and his supporters to develop the theory of Continental Drift (and early version of the theory of plate tectonics). Materials: Provided: outlines of continents Movement of Continents, attached handouts on Evidence for Continental Drift, including 1. geologic provinces, 2. glaciation, 3. Paleozoic mountain belts, 4. climate zones from the Carboniferous, and 5. fossil evidence. You need: blue or other colored 8 X 11 paper, scissors, glue, class notes on Continental Drift (check yours on the website). Procedure: 1. Cut out the continents on the attached sheet, carefully but not obsessively. Put them on a colored ocean in approximately today s positions, then try to fit them together based on their shapes. DON T GLUE THEM DOWN YET. Compare p. 258 & 259 in text, 240 mya or in this handout p. 5 (For Gondwanaland) & 6 (especially 200 mya which shows the Tethys Sea) to see how you did, and then glue in place, correcting if needed. Remember, the world is round, and your map is flat, so the pieces will not fit perfectly. The outlines also do not include continental shelves. Having trouble with Greenland? Hint: it goes vertically, where you d expect it to be 2. Look at the Evidence for Continental Drift on pgs. 3 to 6 of packet, and at the 5 types of evidence listed in Materials, above. On the correct parts of each land mass, draw and label the types of evidence. Include a key like the one below on your map, with boxes either filled with colors, letters or patterns. If you want to use this key, reprint pg. 2 and do the questions separately. Label the worldwide ocean Panthalassa and the smaller sea partly encircled by Pangaea Tethys Sea. yay, bonus pt. because oops, no HO, book, heading this Map: 15 pts., key 1 pt. date =MP 2. Glaciation 1. Geologic Provinces (rock types) 4. Other climate evidence Rock type 1 (black on attached map) Coal Salt Deserts Rock type 2 (dotted on attached map) 5. Fossils, label 4 types by letter 3. Mt. Ranges gypsum 3. Answer these questions. 2 pts each a. What types of evidence were most useful to you in putting the puzzle pieces together? Explain why b. Which pieces of continent were hardest to place in the supercontinent? c. Look at the continental shelves diagrams and description in the chapter on oceans on pgs. 475 & 476, and world map at the bottom of pg. 5 of this handout. Why don t the coastlines all fit together exactly? Hint: When would the continental shelves be the actual coastlines instead of under water? On which continents do you think adding in the shelves would help to match the coastlines better? Pg. 1 of 7 ES1 Reconstructing Pangaea from Singler Sanders-Fleming 3/14/16 10:38 AM

2 How are the shapes of continents projected on a flat piece of paper different than their actual shapes on a globe? d. Besides glossopteris, which fossils appear on more than one continent, and on which continents do they appear? Be specific. e. Mesosauraus was a small lizardlike animal about 20 centimeters long which could only survive in shallow fresh water environments. How does this information support the theory of continental drift? f. Glossopteris is part of an extinct group of seed fern plants. Although similar to present day ferns (which don t produce seeds), these did. What continents are its fossils on? Why is it unlikely that this species existed in all these places if the continents hadn t moved? g. How does the fossil evidence support the other types of evidences? Give examples. h. Find three landmasses on a present day map of the world are not included in the Pangaea puzzle pieces. Why might they be missing? Explain how most islands arcs are formed (NOT from separation from Pangaea or falling sea level. Hint: review Seafloor, Beach Notes, preview p 321) REQUIRED: Something in my life which is connected to any of these ideas: Briefly explanation earth science connection with any of these concepts wrong on map/16 total 4 grade = Fix ex pg for. Do MU for MCGC CIC L FL Forgot grade abbreviations? See class sign, Ipass progress report comments to class, ES1 or ES2 home pages on Mrs. S-Fs website. Do corrections in another color. Makeup: Makeup: (completed handout and sections review 474 #1,3,4 & p.482 #2,3,6 Pg. 2 of 7 ES1 Reconstructing Pangaea from Singler Sanders-Fleming 3/14/16 10:38 AM

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5 world map showing continental shelves: for EC, name a convergent boundary where these shelves should NOT be /09/01/northwest-atlantic-ecosystem-undergoing-changes-due-to-hu- Pg. 5 of 7 ES1 Reconstructing Pangaea from Singler Sanders-Fleming 3/14/16 10:38 AM

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