SCIN 138 Week 8 Final Exam 2023 (Timed and Single Access)

SCIN 138 Week 8 Final Exam 2023 (Timed and Single Access) Which of the following is the most significant natural cause of climate change in the last 2 million years?  A. Milankovitch cycles  B. Burning of fossil fuels  C. Solar flares  D. Photosynthesis  E. Volcanic eruptions Question 3 of 50 2.0/ 2.0 Points Scientific conclusions are based on _____________.  A. only quantitative data  B. objective evidence and experiments  C. public consensus  D. subjective evidence and ancient books  E. polling of experts Feedback: 01.2 Question 4 of 50 2.0/ 2.0 Points The number one factor causing landslides is (are) _____.  A. precipitation  B. earthquakes  C. freeze-thaw cycles  D. volcanic eruptions  E. glaciation Question 5 of 50 2.0/ 2.0 Points What information is needed to determine the distance from the epicenter of an earthquake to a seismic receiving station?  A. The difference between the amplitude of the seismic waves  B. The time interval between the P and S waves  C. The magnitude of the earthquake  D. The amplitude of the seismic waves on a seismogram  E. The transverse nature of the s-wave Question 6 of 50 2.0/ 2.0 Points A coarse-grained (phaneritic texture) igneous rock formed _________________.  A. on the surface of the earth in a quiet (effusive) eruption  B. deep under the surface of the earth  C. by immense direct pressure and heat  D. due to erosion, frost wedging, and weathering  E. on the surface of the earth in an explosive eruption Question 7 of 50 2.0/ 2.0 Points Shield volcanoes consist of _________.  A. A combination of granitic lava and pyroclastic material with some rhyolite.  B. Mostly low viscosity basalt flows with a lower silica content.  C. Alternating layers of silica-rich rocks and intrusive igneous rocks such as basalt.  D. Explosive pyroclastic material and low viscosity lava flows.  E. Alternating layers of cinders and ash embedded in silica-rich lava flows. Question 8 of 50 2.0/ 2.0 Points Where do we generally find the most quantity of explosive volcanic eruptions?  A. Mid-oceanic ridges  B. Ocean island hotspots  C. Divergent plate boundary  D. Transform plate boundary  E. Subduction zone boundary Question 9 of 50 2.0/ 2.0 Points The map below shows continental land as green and brown, the depth of the ocean floor in blue, and tectonic plate boundaries as colored lines. Evaluate this geologic evidence to determine which location would most likely require adequate tsunami preparedness.  A. B  B. C  C. A  D. D Question 10 of 50 2.0/ 2.0 Points When going from a magnitude 5 to a magnitude 6 earthquake on the Richter magnitude scale, what is the increase in seismic wave amplitude?  A. 2  B. 10  C. 1  D. 0.5  E. 100 Question 11 of 50 2.0/ 2.0 Points What evidence did Alfred Wegener use for his hypothesis of continental drift?  A. earthquake patterns and GPS measurements