Review Qs Worksheet (EPSA Env Sci Aid Centre)
Questions
Answer Key
Explanations
Questions
1. What is the relationship between "continental drift" and "plate tectonics"
a. Plate tectonics' is a theory that explains the observation of 'continental drift'.
b. They are the same thing
c. They are two, separate, equally valid hypotheses.
d. Continental drift' is the driving mechanism for 'plate tectonics'.
2. Many features of the Earth's seafloor physiography were not elucidated until the advent
of Sonar.
a. True
b. False
3. Robert S. Dietz and Harold Hess propose that magma erupts onto the seafloor at a
mid-ocean ridge as two plates move in opposite directions as a fundamental mechanism
to explain continental drift. What did they call it?
a. Sea Floor Stripping
b. Sea Floor Spreading
c. Sea Floor Mapping
d. The proposition was rejected as physically impossible
4. Which of the following is true about the Vine Matthews Morely hypothesis?
a. Symmetrical patterns of magnetic polarity are found across mid ocean
ridges.
b. The magnetic polarity switches from North to South, which is called Magnetic
reversals.
c. Magma emerging in rift valleys preserves the polarity of current time period
d. All of the above
5. Technological advances in anti-submarine strategies during the Cold War led to the
mapping of the ocean floor.
a. True
b. False
6. Which of the following is true about the mantle convection theory?
a. Convection currents within the mantle cause drift.
b. The theory was popular in North America and influenced future investigations.
c. It suggests that cool magma raises as it cools down and pushes hot magma
downwards.
1
, EESA06 Winter 2024 Midterm
Review Qs Worksheet (EPSA Env Sci Aid Centre)
d. All of the above
7. Which of the following is true?
a. Permanentism explains the formation of mountains from shifting continents.
b. Rock types and fossil records from different continents suggested the existence of
Pangea.
c. Earth’s interior was considered too soft to allow continental drift.
d. All of the above
8. Who first developed the concept of the continental drift?
a. Alfred Wegener
b. Tuzo Wilson
c. Arthur Holmes
d. Harold Hess
9. what is the definition of mobilism?
a. the shift of tectonic plates as divergent, convergent and sliding boundaries
b. the theory which defines the supercontinent, Pangaea
c. the creation of mountains by colliding continents
d. the findings of the same or similar fossils in different modern continents
10. Which of the following states is INCORRECT?
a. P waves are first waves recorded on seismograph
b. S waves travel through liquid and solid while P waves travel through solid
only
c. S waves stand for “Secondary waves” and P waves stand for “Primary waves”
d. S waves are transverse waves while P waves are compressional waves
11. Oceanic crust is much more dense and silica rich than Continental Crust
a. True
b. False
12. The largest zone of Earth’s interior by volume is…
a. The crust
b. The outer core
c. The mantle
d. The inner core
13. Most of the oceanic crust is made up of…
a. Basalt
b. Granite
c. Peridotite
d. Limestone
14. Continents are small tectonic plates.
a. True
b. False
15. Rock melts into magma when…
a. It undergoes decompression
b. If brought into contact with something hot
c. If it gets wek (flux-induced melting)
2