A. Free-air B. Bouguer C. Geoid D. Both B and C 13. Which of the following is NOT an actual rift-valley? A. Rhine Valley B. Red Sea C. East African Rift Valley D. Keystone Valley 14. Isostatic rebound occurs after: A. Tensional forces B. Compressional forces C. Glacial advance D. Glacial Retreat 15. Which of the following pyroclastic debris is the smallest? A. Ash B. Bomb C. Cinder D. Lapilli 16. Which of the following would lower rock melting temperatures? A. More mafic rock B. Increase water content C. Increase pressure D. Larger crystals 17. Fractional crystallization segregation follows the: A. Hess progression B. Wilson cycle C. Cope series D. Bowen’s reaction series 18. The lava in subduction volcanoes is sourced from: A. The subducted slab B. Melted rock above the slab C. The deep mantle D. Hot spots 19. Mid-ocean ridges are offset by: A. Hot spots B. Mantle plumes C. Transform faults D. Normal faults 20. The mean elevation of land on Earth is ________ many meters above sea level? A. 840 B. 560 C. 220 D. 100 21. If all the land on the Earth was moved into the ocean, about how deep would the sea be? A. 10 km B. 7 km C. 5 km D. 3 km 22. The formation of the isthmus of Panama led to the: A. South American Extinction B. Great American Interchange C. American Diversification Event D. American Redistribution 23. Horst and graben topography is dominated by what kind of fault? A. Normal B. Reverse C. Thrust D. Strike-slip 24. Which of the following form from trench roll-back? A. Rift basin B. Intermontane basin C. Foreland basin D. Back arc basin Questions 25-30 refer to the image below:
A. Free-air B. Bouguer C. Geoid D. Both B and C 13. Which of the following is NOT an actual rift-valley? A. Rhine Valley B. Red Sea C. East African Rift Valley D. Keystone Valley 14. Isostatic rebound occurs after: A. Tensional forces B. Compressional forces C. Glacial advance D. Glacial Retreat 15. Which of the following pyroclastic debris is the smallest? A. Ash B. Bomb C. Cinder D. Lapilli 16. Which of the following would lower rock melting temperatures? A. More mafic rock B. Increase water content C. Increase pressure D. Larger crystals 17. Fractional crystallization segregation follows the: A. Hess progression B. Wilson cycle C. Cope series D. Bowen’s reaction series 18. The lava in subduction volcanoes is sourced from: A. The subducted slab B. Melted rock above the slab C. The deep mantle D. Hot spots 19. Mid-ocean ridges are offset by: A. Hot spots B. Mantle plumes C. Transform faults D. Normal faults 20. The mean elevation of land on Earth is ________ many meters above sea level? A. 840 B. 560 C. 220 D. 100 21. If all the land on the Earth was moved into the ocean, about how deep would the sea be? A. 10 km B. 7 km C. 5 km D. 3 km 22. The formation of the isthmus of Panama led to the: A. South American Extinction B. Great American Interchange C. American Diversification Event D. American Redistribution 23. Horst and graben topography is dominated by what kind of fault? A. Normal B. Reverse C. Thrust D. Strike-slip 24. Which of the following form from trench roll-back? A. Rift basin B. Intermontane basin C. Foreland basin D. Back arc basin Questions 25-30 refer to the image below:
dynamicplanet_2017_b_gopher_key.docx