Exam 1
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Exam One Week 6 a¢ e Due No due date Points 99.9 Questions 30 Time Limit 500 Minutes Allowed Attempts Unlimited Instructions IELCR XV F1i) Attempt History Attempt Time Score LATEST Attempt 1 54 minutes 99.9 out of 99.9 Score for this attempt: 99.9 out of 99.9 Submitted Jan 15 at 12:06pm This attempt took 54 minutes. Question 1 3.33 /3.33 pts The asthenosphere is Correct! the plastic (capable of flow) portion of the upper mantle beneath the lithosphere. near the core of the Earth. on top of the lithosphere. located in the mantle. Question 2 3.33 /3.33 pts The oceanic crust is made of what type of rock? Granite Correct! Basalt only gases with no rock found coronal mass ejection material
Question 3 3.33 / 3.33 pts Continental crust is mostly which type of rock? basalt 00zes Correct! granite tektites Question 4 3.33/3.33 pts The particles found in some ocean sediment that suggests that an extraterrestrial impact event are: 00Zes clays silt Correct! tektites Question 5 3.33 / 3.33 pts In relation to continental crust, oceanic crust is: less dense Correct! more dense equal density exists between the two types of crust only found in remote areas Question 6 3.33 / 3.33 pts Sediment that begins as rocks on continents or islands is called: biogenous sediment hydrogenous sediment Correct! lithogenous (terrigenous) sediment
cosmogenous sediment Question 7 3.33/3.33 pts Which of the following is an important control on oceanic sediment accumulation? dilution rate of deposition degree of perservation Correct! All of the above are important for oceanic sediment accumulation Question 8 3.33/3.33 pts The five principal ocean basins on Earth are the: Correct! Atlantic, Pacific, Indian, Southern (Antarctic), and Arctic Antarctic, Caspian, Mediterranean, Pacific, and Arctic Atlantic, Red Sea, Mediterranean, Pacific, Arctic None of the above Question 9 3.33/3.33 pts Early Polynesians only traveled with sight of land. True or False True Correct! False Question 10 3.33/ 3.33 pts Free oxygen was present in the Earth's primordial atmosphere. True or False? True Correct! False Question 11 3.33 / 3.33 pts
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Heterotrophic organisms can make their own food from inorganic carbon sources. True or False? True Correct! False Question 12 3.33/3.33 pts Anaerobic organisms require oxygen to survive. True or False? True Correct! False Question 13 3.33/3.33 pts Radiometric dating is used to determine the ages of rocks. True or False? Correct! True False Question 14 3.33 /3.33 pts Christopher Columbus established trade routes from Europe around Africa to India. True or False? True Correct! False Question 15 3.33/3.33 pts The largest of the ocean basins, which currently covers more than half of the ocean surface, is the: Arctic Ocean Atlantic ocean Correct! Pacific ocean Indian Ocean
Question 16 3.33/3.33 pts The average depth of the world's oceans is approximately: 11,022 meters (36,161 feet) 840 meters (2,756 feet) Correct! 3,682 meters (12,080) feet 2,172 meters (7,126 feet) Question 17 3.33/3.33 pts An example of the first humans known to have developed the art of navigation were the: Correct! Polynesians and Phoenicians Vikings none of the above Question 18 3.33/3.33 pts Plate Tectonics and evolution, which are held with a high degree of confidence because of rigorous testing and verification, are examples of: guesses law hypothesis Correct! theories Question 19 3.33 /3.33 pts The Sun and the rest of the solar system formed about 5 billion years ago from a huge cloud of dust and gas called a: solar system Correct! nebula protoplanet
quasar Question 20 3.33/3.33 pts The nebular hypothesis suggests that: Correct! all bodies in the solar system formed from an enormous gas cloud Earth's moon is an asteroid captured by the Earth's gravity the moon is derived from a protoplanet The Earth was formed by a cosmic explosion, a "big bang” Question 21 3.33/3.33 pts The Earth is about: 6,000 years old Correct! 4.6 billion years old 4.6 million years old 40 billion years old Question 22 3.33/3.33 pts Radioactive materials can sometimes be used to determine the: origin of rocks formation method metamorphism Correct! ages of rocks Question 23 3.33 / 3.33 pts New crust is formed at trenches and older crust is subducted at oceanic ridges. True or False? True Correct! False
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Question 24 3.33/3.33 pts The oldest rocks are located at mid-ocean ridges. True or False? True Correct! False Question 25 3.33/3.33 pts A rift valley may be associated with divergent plate boundaries. True or False? Correct! True False Question 26 3.33/3.33 pts The continental shelf is generally defined as a very steeply sloping zone extending from the shoreline to the shelf break. True or False? True Correct! False Question 27 3.33/3.33 pts Deep ocean trenches are associated with: rift valleys Correct! subduction zones transform faults turbidity currents Question 28 3.33/3.33 pts Large volcanoes on the seafloor that are cone-shaped on top because they never reached sea level are called: hotspots
tablemounts Correct! seamounts guyots Question 29 3.33/3.33 pts The correct order of seafloor features from the coast to the mid-ocean ridge is: abyssal plain, rise, slope, shelf abyssal plain, shelf, slope, rise rise, abyssal plain, slope, shelf Correct! shelf, slope, rise, abyssal plain Question 30 3.33/3.33 pts Sediments produced by plants and animals in the sea are called: cosmogenous Correct! biogenous hydrogenous lithogenous Quiz Score: 99.9 out of 99.9