REVIEW Exam #2. GG101 Some review questions for you – 1) Describe the three primary types of 20) Explain why S waves travel through the solid mountain systems. layers of Earth but not the liquid layer. 2) Graph geologic stress and strain 21) What technique is used to identify the relationships. location of an earthquake and how does 3) Draw seismic waves in Earths interior it work? and clearly label all components 22) Draw the vertical profile of Earths 4) Draw and label the geologic time scale. interior and name the various 5) Describe the primary lines of evidence discontinuities for evolution. 23) What is the principle of superposition? 6) Describe the scientific evidence that 24) Define the stratigraphic principles. humans are the cause of global 25) Describe the difference between relative warming. dating and absolute dating. 7) Recount the geologic history, and the 26) Which principle can define the principles you used, of the crustal crossorganization of the crust based on fossil section in the following figure. List evidence? events from oldest to youngest. 27) After one half-life, a sample will contain twice the number of atoms that were originally present: true or false? 28) If parent isotopes have left the sample, the calculated age will be too old: true or false? 29) What do homologous structures suggest about animals with those structures? 30) Why do vestigial structures still exist in some organisms? 8) 31) What mass extinction was the worst? 9) Draw and describe the types of faults. What is the evidence?) 10) What are the kinds of directed stress? 32) What is the hottest decade on record? 11) What kinds of plate boundaries are 33) What do greenhouse gases do? characterized by which kind of directed 34) What are the natural sources of carbon stress? dioxide? 12) Define geologic ‘strain’. 35) What is the impact of more water vapor 13) What is the difference between a in the atmosphere? fracture and a fault? 36) What is the short-term state of the 14) How are dip-slip faults different from atmosphere at a given location? strike-slip faults? 37) Describe the movement of ice in a 15) Are the rocks on the limbs of an eroded glacier. anticline older or younger than in the 38) What is a moraine? core? 39) Describe how oxygen isotopes provide a 16) What is the tectonic setting of the three climate proxy. primary mountain systems? 40) Why do scientists study the Eemian? 17) Why is the Basin and Range Province 41) Describe 5 glacial depositional features experiencing extension? and how they originated. 18) What has caused the risk from 42) Describe 5 glacial erosional features and earthquakes to increase in recent how they originated. decades? 19) Explain why some plate boundaries have deep earthquakes and some do not. 1