1. true or false; before sophisticated sampling equipment and methods, scientists were able to determine the nature of oceanic crust by studying ophiolite sequences found on land?
2. which of the following would not be a consequence of lower sea-level during the pleistocene epoch.
a) glaciers extended out to the continental shelf
b) continental shelves were above sea-level
c) fossil reefs on land
d) deposition of gravel, sand, and mud on continental shelves
3. you are sailing the ocean and come across an atoll. what can you predict about the origin of the atoll?
a) it was along a mid-ocean ridge
b) it started as a fringing reef
c) it was built up from a carbonate platform
d) it started as an eez methane hydrate
4. how do the compositions of mid-ocean ridges and mountain ranges on land differ?
a) composition is the same in both
b) ocean ridges are all 3 rock types and mountain ranges are only basalt
c) mountain ridges are all 3 rock types and ocean ridges are only basalt
d) both are composed of only basalt
5. which seismic wave is characterized by alternating compression-expansion parallel to the direction of wave movement?
a) p-waves
b) s-waves
c) love wave
d) rayleigh wave
6. true or false; intensity describes the amount of energy released while magnitude describes the amount of damage done by an earthquake?
7. two sets of p and s waves at seismic stations led to the discovery of which earth interior boundary?
a) asthenosphere
b) mohorovicic discontinuity
c) inner-outer core boundary
d) p-wave shadow zone
8. which characteristics are correctly matched with a layer of earth?
a) lithosphere – zone of magma generation
b) asthenosphere – lacks strength and flows plastically
c) mantle – outer ridge plates
d) outer core – solid layer due to intense pressure
9. by studying kimberlite pipes, what did scientists discover?
a) age of the continental crust
b) the state of matter of the inner core
c) the composition of the mantle
d) the mass of the mantle