Page One. GEOL 1030 Pre test S15. Please enter your rst and last name.

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1 GEOL 1030 Pre test S15 Page One Please enter your rst and last name. First Name: Last Name: 1. The most common elements in the Earth's crust, in order of decreasing abundance, are: a. feldspar, quartz, pyroxenes b. magnesium, oxygen, calcium c. oxygen, silicon, aluminum d. iron, calcium, sodium 2. Minerals are identi ed on the basis of : a. their usefulness to man b. their physical properties c. where they are found d. the processes which formed them 1/7

2 3. Igneous rocks are classi ed based upon: a. their mineral texture and composition b. how heavy they are c. the origin of the sediment from which they formed d. how well they burn 4. is a predominant igneous rock of continents and mountain ranges. a. granite b. basalt c. feldspar d. amphibole 5. is the predominant igneous rock of the oceanic crust. a. granite b. basalt c. feldspar d. amphibole 6. The three main types of volcanoes are: a. explosive, collapsing, and liquid b. small, big, and enormous c. deadly, harmless, and submarine d. shield, composite, and cinder cone 7. When rocks are exposed at the Earth's surface, they are then altered by: 2/7

3 a. contact and regional metamorphism b.chemical and mechanical weathering c. hydrothermal uids d.cosmic forces 8. Sedimentary rocks may be: a. clastic, chemical, or organic b. intrusive or extrusive c. foliated or non-foliated d. from the mantle 9. The two classes of metamorphic rocks are: a. igneous and chemical b. foliated and non-foliated c. conglomerate and breccia d. meteors and comets 10. Relative time is concerned with: a. the sequence or order in which events took place b. the actual age of a rock or event, in years c. radioactive decay d. identifying rock types 11. Absolute or numerical age is concerned with: a. the sequence or order in which events took place 3/7

4 b.the actual age of a rock or event, in years c. the classi cation of rocks d. the naming of unconformities 12. An igneous rock once contained 8 grams of a parent isotope. It now contains 1 gram. The half-life of the parent isotope is 100,000 years. The rock is how old? a. 700,000 years old b. 300,000 years old c. 50,000 years old d. 800,000 years old 13. The movement of a mass of debris or bedrock toward the base of a slope is called: a. a tsunami b. a gravitational anomaly c. an earthquake d. mass wasting 14. The drainage basin of a stream: a. is the total area drained by a stream and its tributaries b. a bowl-shaped depression containing a lake c. has no outlet d. is the same as a ood plain 15. Groundwater velocity depends on: 4/7

5 a. the density of the rock b. magnetic currents c. isostatic rebound d. the slope (gradient) of the water table and the permeability of the rock 16. The amount of seasonal snowfall required for a glacier to form is: a. more than 30 feet b. more than melts in the warm season c. 2 inches d. a lot 17. Glaciers can be classi ed as: a. ice sheets or valley glaciers b. permanent or temporary c. moving or not moving d. high altitude or low altitude 18. Which of the following would not be a control on desert development: a. presence of a rain shadow on the downwind side of a mountain range b. location a great distance from an ocean c. location near cool ocean currents d. climatic belts at 300 north and south latitude 19. Rocks under stress may break and create a or bend and create a. 5/7

6 a. mountain, valley b. fault, fold c. volcano, crater d. continent, ocean 20. The contains most of the world's earthquakes: a. interior craton of North America b. San Andreas Fault c. east coast of South America d. circum-paci c Belt 21. Earth scientists use to get most of the information about the interior of the Earth: a. dredges b. caves c.seismic waves and geophysics d. satellites 22. We know that the North and South magnetic poles have reversed positions in the past by: a. using gravity meters b. seismic wave shadow zones c. measuring the magnetic elds and isotopic age of igneous rocks d. the question is unanswerable because the magnetic poles have not changed 6/7

7 23. A globe-circling mountain range made of basalt, located mainly in the middle of the oceans is: a. the continental rise b. the mid-oceanic ridge c. the Marianas Trench d. the aseismic ridge 24. The idea that the Earth's surface is divided into several large tabular shapes that change position is called: a. uniformitarianism b. catastrophism c. plate tectonics d. shrinking and swelling of the Earth 25. Plate tectonics combines the concepts of: a. continental drift and sea oor spreading b. joints and faults c. anticlines and synclines d. asteroid strikes and meteorite strikes Submit 0% 7/7