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Lecture 10

EAS100 Lecture Notes - Lecture 10: Seismogram, Particle Size, Closed System


Department
Earth and Atmospheric Sciences
Course Code
EAS100
Professor
Solweig Balzer
Lecture
10

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EAS 100 – EXAMPLE MIDTERM
Note this example is for a 60-minute midterm. A 50-minute midterm will have a
similar format, but fewer questions.
MULTIPLE CHOICE (25 marks – 25 questions)
1. When describing a mineral, the property ‘fracture’ refers to the __________.
a) Ability of the mineral to split along planar surfaces
b) Density of a mineral
c) Development of crystal faces during mineral growth
d) Development of irregular surfaces in a mineral
2. If you propose a hypothesis that cannot be tested with today’s technology or be seen in the real
world, is it still technically considered a scientific idea?
a) No
b) Yes
3. The hydrological cycle contains several processes. Which one the following processes would have
the greatest influence on the atmosphere in tropical forests?
a) Condensation
b) Evaporatranspiration
c) Precipitation
d) Surface flow
4. What group would a mineral given by the formula Fe2Al9Si4O22(OH)2 belong to?
a) Hydroxide
b) Native element
c) Oxide
d) Silicate
5. What type of bonding would you expect in a mineral that has high ductility?
a) Covalent
b) Ionic
c) Metallic
d) Van der Waals
6. Which of the following features commonly marks the boundaries between most geological eras and
periods?
a) Asteroid impacts
b) Major periods of volcanic activity
c) Mass extinctions
d) No particular feature
7. Where does most of the solar radiation absorbed by the Earth go?
a) Reflected back out to space.
b) Re-radiated back out the space.
c) Stored in the ground as geothermal energy.
d) Stored in water bodies.
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8. Cycles can involve elements tracked over various spatial and temporal scales.
a) True
b) False
9. Which of the following statements about events in the geological time scale is true?
a) Absolute dates were added after most of the time scale boundaries were created.
b) Humans first appeared before the Cenozoic.
c) Isotopes are the main tool used to date material of Hadean age.
d) Unconformities make it easier to determine the geological history of a region.
10. Which of following properties is not common to all silicate minerals?
a) All contain oxygen
b) All contain silicate tetrahedra
c) All have some covalent bonding
d) All highly resistant to weathering
11. An element transfers 2 electrons to another element to fulfill an outer shell and promote stability.
This is known as a(n)____________ bond.
a) Covalent
b) Ionic
c) Metallic
d) Van der Waals
12. Feldspar is the most common non-silicate mineral found in rocks.
a) True
b) False
13. The transformation of sediment into a sedimentary rock is termed ____________.
a) Lithification
b) Metamorphism
c) Precipitation
d) Weathering
14. River systems deposit most of their dissolved and suspended loads in oceans.
a) True
b) False
15. You see the single term “core” on an EAS 201 exam and have to define it. Which of the following
statements would best fit the definition of the term?
a) A name of a Hollywood movie.
b) Compositional internal layer of the Earth.
c) Internal layer of the Earth comprised of solid, rock material.
d) Rheological internal layer of the Earth.
16. What is the major cause of the “Pacific Ring of Fire”?
a) A series of mantle hot spots
b) A mid-ocean ridge system
c) Deep, transform faults
d) Subducting plates
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