ES1010unit4 - User Course ES101015N6B16S1,EarthScience Test...

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User  Course  ES 1010-15N-6B16-S1, Earth Science Test  Unit IV Assessment Started  6/17/16 11:19 PM Submitted  6/19/16 11:03 PM Due Date  6/21/16 11:59 PM Status  Completed Attempt Score  94 out of 100 points   Time Elapsed  47 hours, 43 minutes Instructions  Results Displayed  Submitted Answers, Correct Answers, Feedback     Question 1     0 out of 2 points               Recall from your reading about the nature of volcanoes to choose the best answer: A volcanic eruption is driven by __________ and __________ which forces its way upward and may ulti- mately break though zones of weaknesses in the Earth's crust.     Selected Answer:      Incorrect heat; gas pressure     Correct Answer:      Correct buoyancy; gas pressure     Question 2     0 out of 2 points               Recall from your reading about the nature of volcanoes to choose the best answer: Magma  tends to rise toward Earth's surface principally because __________.     Selected Answer:      Incorrect rocks become more dense when they melt     Correct Answer:      Correct mounting pressure within the reservoir     Question 3     2 out of 2 points               Due to the nature of volcanoes the violent separation of gas from lava forms __________.     Selected Answer:      Correct pumice     Correct Answer:      Correct pumice     Question 4
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    2 out of 2 points               Recall from your reading about the relative time scale and refer to the following diagram of a  composite geologic section to answer the question. Which of the following is the oldest rock  layer observed in the diagram?     Selected Answer:      Correct     Tapeats Sandstone     Correct Answer:      Correct     Tapeats Sandstone     Question 5     0 out of 2 points               Which of the following is NOT the property of radioactive decay?     Selected Answer:      Incorrect     During Alpha emission an atom's neutron number is decreased by 2.     Correct Answer:      Correct     During Beta emission an atom's neutron number is increased by 1.     Question 6     8 out of 8 points               Recall your reading of Relative Time Scale and Radiometric Time Scale and match the term  with the definition.         Question Correct Match  Selected Match         Isotopes                  Correct H.
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