PHYS 1403 Lab 2 Plate Tectonics.docx

Lab 2. Plate Tectonics Readings: USGS pdf “Dynamic Earth” https://pubs.usgs.gov/gip/dynamic/ You may wish to print these questions before you visit this website: http://geology.com/plate-tectonics.shtml Observe the Plate Tectonics Map - Plate Boundary Map at the above website and answer: Aleutian Islands 1 Convergent is the type of plate boundary. 2 Pacific plate and North American plate are the two plates meeting there. 3 False (True or False) The islands are volcanoes. Cascade Volcanoes 4 Convergent is the type of plate boundary. 5 Juan de Fuca Plate and North American Plate are the two plates meeting there. San Andreas Fault 6 Transform is the type of plate boundary.

7 Pacific Plate and North American Plate are the two plates meeting there. Appalachian Mountains 8 Convergent was the type of plate boundary where the Appalachian Mountains formed. Andes Mountains 9 Convergent is the type of plate boundary. 10 Nazca plate and South American Plate are the two plates meeting there. 11 False True or False) The mountains are volcanoes. Mid-Atlantic Ridge 12 Divergent is the type of plate boundary. Alpine Fault, New Zealand 13 Transform is the type of plate boundary. 14 Pacifiic Plate and Indo-Australian plate are the two plates meeting there. Himalayan Mountains 15 Convergent is the type of plate boundary.

Red Sea 16 Divergent is the type of plate boundary. 17 African plate and Arabian plate are the two plates meeting there. Kuril Islands Between Kamchatka and Japan 18 Convergent is the type of plate boundary. 19 Pacific plate and North American plate are the two plates meeting there. 20True ( True or False) The islands are volcanic. East Africa Linear Lakes 21 Divergent is the type of plate boundary. Caribbean Volcanic Arc 22 Convergent is the type of plate boundary. 23Caribbean and North American are the two plates meeting there. 24 Eastern North, South, East, West) is the side of the Caribbean with volcanoes. Now scroll down and click the cell labeled: “Convergent Boundary” Convergent Plate Boundary - Oceanic and Continental Plates

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25 Oceanic Oceanic or Continental) plates are thinner. 26 Oceanic Oceanic or Continental) plates are denser. 27 Oceanic Oceanic or Continental) plates are subducted. 28 Continental Oceanic or Continental) plates are thicker. 29 Continental Oceanic or Continental) plates are less dense. 30 100km is the depth that the subducted plate begins to melt. 31 Earthquakes is what the little red dots in the diagram represent. 32 Volcanic Activity is what the larger red areas containing arrows represent. 33 Less More or Less) is the density of magma as compared to the surrounding rocks. 34 Nazca plate is the plate being subducted under the South American plate. Convergent Plate Boundary – Oceanic (i.e. Oceanic and Oceanic Plates) 35 Older Older or Younger) oceanic plate is normally the one subducted. 36 Older Older or Younger) oceanic plate has the higher density.

37 Higher Higher or Lower) density plates are the ones subducted. 38 Higher ( Higher or Lower) is the density of magma chambers compared to the surrounding rock. Convergent Plate Boundary – Continental (i.e. Continental and Continental Plates) 39 Himalayans is the best example of a continental-continental convergent boundary. 40 Alps is another mountain range formed by continental-continental collisions. Now scroll down and click the cell labeled: “Transform Boundary” 41 Pacific plate is the plate on which Los Angeles is located. 42 True True or False) Plates slide past each other at transform boundaries. 43 San Andreas fault is a transform boundary in California. 44 Alpine fault is a transform boundary in New Zealand. 45 False True or False) Transform faults and strike-slip faults are the same thing. Now scroll down and click the cell labeled: “Divergent Boundary” 46 Mantle convection is what lifts mid-ocean ridges.

47 True True or False) Mid-ocean ridges are higher due to accumulation of volcanic rock. 48 Divergent is the type of plate boundary at the Mid-Atlantic ridge. 49 Divergent is the type of plate boundary at the East African Rift. 50 Divergent is the type of plate boundary at the Red Sea.

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