GEOS212 Introduction to Oceanography EXAM 1 Fall 2014 Practice Exam NAME Good luck on your exam The ground rules are simple you may not use any books notes calculators conversations or anything but what is in your own head to answer these questions BEFORE YOU DO ANYTHING ELSE put your name on all 5 pages of this exam Read all questions carefully and answer them completely In my experience the failure to read questions carefully has been the single biggest reason that people lose points on a test Section 1 Multiple Choice Slides 2 points each USE CAPTIAL LETTERS 1 11 21 2 12 22 3 13 23 4 14 24 5 15 25 6 16 7 17 8 18 9 19 10 20 CONTINUE TO NEXT PAGE Points on this page Geos 212 Exam 1 NAME Section 2 Draw and Label Diagrams 1 10 points Draw a diagram that shows how oceanic crust is created at a spreading center Be sure to label the lithosphere the asthenosphere the ocean floor the locations of lava and magma and the direction of motion of anything moving 2 10 points On the diagram below showing the profile view from the Andes Mountains across the Amazon Basin and extending into the deep ocean please indicate and label the following One location where you find living diatoms One location where you find boulders Two locations where you find mud The location where you find the delta One location where you find feldspar Two locations where you find quartz One location where you find calcite The location where you find the continental shelf L B M D F Q C S CONTINUE TO NEXT PAGE Points on this page Geos 212 Exam 1 NAME 3 10 points If the island of Kauai is now 800 km from the hot spot that created it and the rocks there are 10 million years old how fast is the Pacific plate moving Give your answer in cm yr Show all work 4 10 points Draw a profile view of a subduction zone where an oceanic plate is subducted beneath a continental plate On this diagram 1 2 3 4 Show the direction of motion of each of the two plates at least 2 arrows Label the following seawater continental crust ocean crust mantle lithosphere asthenosphere trench Show magma being made and rising into volcano Indicate the type of rock created at the volcano CONTINUE TO NEXT PAGE Points on this page Geos 212 Exam 1 NAME GS G H M X T H C C N O X SM K C G 5 10 points On the above map indicate the following 1 An ocean ocean subduction zone 2 A location where you could walk on a spreading center 3 A hot spot volcano 4 A mountain range formed by continental rifting 5 A location where sediment is transported by glaciers 6 A location formerly on the shores of the Tethys Sea 7 A location with very thick sediment 10km 8 A place where new ocean crust is being created 9 A location near South America with thick sediment On East 10 A location near South America with thin sediment West O S H M G T X C K N CONTINUE TO NEXT PAGE Points on this page Geos 212 Exam 1 NAME BONUS 6 points The elements carbon chlorine and cobalt have different profiles in the ocean Identify which is accumulated which is recycled and which is scavenged Draw the typical profile with depth for each class of element ACCUMULATED LO HI RECYCLED LO HI SCAVENGED LO HI Surface Deep Chlorine ELEMENT NAME Carbon Cobalt ELEMENT NAME ELEMENT NAME END OF THE TEST Points on this page 1 Correct plate motion C B A 2 Which tectonic plate is Tucson on A North American B Rocky Mountain C Mexican D Pacific 3 Rock found in most mountains on continents A Basalt B Calcite C Limestone D Granite Where is new ocean crust created 4 A C B 5 Hawaii is on a A Subduction zone B Spreading Center C Hot spot D Transform fault 6 Age of oldest ocean floor A 2500 my B 180 my C 30 my D 1 my 7 Water depth on the continental shelf A 100 m B 2 km C 4 km 8 Water depth here A 2 km B 4 km C 10 km 9 Sea level is NOT affected by A amount of sea ice B amount of ice on land C water temperature D shape of ocean basins 10 When did Pangaea exist A 200 thousand years ago B 200 million years ago C 200 billion years ago 11 These mountains were formed by A Continental Rifting C Subduction Zone B Continents Colliding D Hot Spot Ganges river 12 A B C D 13 Main types of sediment here A boulders gravel B sand mud C turbidites D skeletons 14 How is sediment transported A rivers B wind C glaciers 15 Location of turbidites A C B D 16 Iron in your body comes from A Quartz B Mica C Feldspar D Clay Quartz Mica Feldspar 17 A 0 05 B 3 5 C 50 D 98 6 How much of sea water is salt 18 Diatoms make their skeletons out of A quartz Si B calcite Ca C clay D salt 19 The profile for scavenged elements is A uniform from the surface to the bottom B low at the surface high at depth C high at the surface low at depth D none of the above 20 Rain makes seawater A Saltier B Fresher C Colder D Warmer 21 Gas consumed by sharks A Carbon Dioxide B Oxygen C Chlorine D Sulfate 22 Ocean warmer at equator than poles due to A Direct sunlight at the equator B Indirect sunlight at the equator C Volcanoes D Photosynthesis 23 What zone is this A Photic zone B Twilight zone C Dark zone 24 This process is driven by A sediment cycle B plate tectonics C sunlight D none of these 25 Color we would see at 100 meters depth A Red B Gray C Blue