Levin, Chapter 7

Test your knowledge by selecting an answer and pressing the Submit answer button.

  1. Which of the following is a character of continental crust rather than oceanic crust?
    Darker in color
    Older on average
    Higher density
    Higher melting temperature
    More like the earth's mantle

  2. What was the single supercontinent of the Paleozoic/Mesozoic boundary called, as named by Alfred Wegener?
    Gondwanaland
    Laurasia
    Laurentia
    Pangea
    Panthalassa

  3. Which of the following was not used by Alfred Wegener as an evidence for Continental Drift?
    Coal deposits at high northern latitudes
    Geographic fit of the continents
    Glacial deposits in tropical regions
    Land bridges between continents
    Similar fossils on the southern continents

  4. What is the age of the rocks and fossils used as evidence of continental drift by Alfred Wegener?
    Early Mesozoic
    Early Paleozoic
    Late Mesozoic
    Late Paleozoic
    Precambrian

  5. Which continents have the greatest similarity in fossils and rocks from this time period?
    Africa and Europe
    Africa and South America
    Asia and Australia
    Asia and Europe
    Asia and India

  6. Where are the youngest rocks found on the seafloor?
    Around deep-sea trenches
    Around mid-oceanic ridges
    Around transform faults and fracture zones
    Seafloor basalts are nearly all too old to be dated.
    Seafloor basalts are uniform age throughout most of the oceans.

  7. What is the nature of magnetic stripes on the seafloor?
    They are horizontal and can only be seen in deep-sea drill cores.
    They run parallel to deep-sea trenches and are offset by mid-oceanic ridges.
    They run parallel to deep-sea trenches and are offset by transform faults.
    They run parallel to mid-oceanic ridges and are offset by transform faults.
    They run parallel to transform faults and are offset by mid-oceanic ridges.

  8. What information cannot be obtained from paleomagnetic measurements?
    Direction of north
    Latitude
    Longitude
    Magnetic intensity

  9. What plate tectonic setting is each feature or phenomenon associated with?
    Continental rift zones
    Deep-sea trenches
    Earthquakes
    Fracture zones
    Hot spot volcanoes
    Island arc volcanoes
    Mid-ocean ridges
    Mountain belts
    Subduction zones
    Convergent
    Divergent
    Transform
    All of the above
    None of the above

  10. What is the origin of the Appalachian Mountains?
    Collision of continents
    Hot spot in the mantle
    Rifting
    Subduction and volcanism
    Transform faulting

  11. Which state is made almost entirely of accreted terrains that fused during the Mesozoic Era?
    Alaska
    California
    Florida
    Maine
    Texas

  12. Match each island chain with its origin.
    Aleutian Islands
    Antilles Islands
    Florida Keys
    Hawaiian Islands
    Mariana Islands
    Hot spot volcanism
    Island arc volcanism
    None of the above

  13. Which of the following is a characteristic of hot spot island chains?
    All volcanoes in the chain are made of basalt.
    All volcanoes in the chain are the same age.
    These chains occur along mid-ocean ridges.
    These chains occur on continental shelves.
    These chains parallel subduction zones.

  14. Which of the following island chains was not formed in a subduction zone and is not made of andesite?
    Aleutian Islands
    Hawaiian Islands
    Mariana Islands
    Philippine Islands
    Solomon Islands

  15. How has oceanic crust been formed?
    By collision of large continents
    By magma from partial melting of subducting lithosphere
    By magma from partial melting of the mantle
    By precipitation of minerals from the ocean
    By the first solidification of the earth's surface

  16. How has continental crust been formed?
    By collision of large continents
    By magma from partial melting of subducting lithosphere
    By magma from partial melting of the mantle
    By precipitation of minerals from the ocean
    By the first solidification of the earth's surface

  17. Which of the following is a characteristic of continental crust (compared with oceanic crust)?
    Darker color
    Higher melting temperature
    Lower density
    Lower silica content
    Usually younger

  18. Match each feature with the type of silicate rock it is made of.
    Continental crust
    Mantle
    Oceanic crust
    Felsic
    Mafic
    Ultramafic

Please report any errors or problems to Dr. Heaton.
Press here to return to the ESCI 103 Home Page.