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GEOL 105 Final Review Flashcards | StudBud
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GEOL 105 Final Review
GEOL 105 Final Review
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Answers
1
North America formed in a single large tectonic event.
True
False
2
What was the weird time where life evolved just prior to the Cambrian Explosion?
Ordovician
Paleozoic
Cryogenian
Ediacaran
3
What is the age if a material if all of the daughter product was removed from the system?
Same age of the rock
The age is 0
The age is 100 Ma
The age is one half-life
4
What system do geologists use to measure very OLD events?
Uranium system
Carbon system
relative dating.
nitrogen system
5
Why is there more impacts on the Moon than on Earth.
The moon has a higher gravitational pull
Plate tectonics recycles the crust on Earth
The moon is older
Water covers our impacts
6
The chemistry between the crust and whole Earth are widely different!
True
False
7
Which of the following do NOT have a direct affect on sea-level?
Atmospheric O2
Amount of mid oceanic spreading ridges
Temperature of the ocean
Amount of ice on the planet
8
Which plate boundary is not associated with volcanism?
Transform
Oceanic
Divergent
Convergent
9
Which sedimentary structure might you find on an oceanic beach.
Graded bedding
Asymmetric ripples
Mud cracks
Symmetric ripples
10
What event occurred just prior to the Cambrian Explosion of life?
Snowball Earth
Mass extinction
Meteorite impact
Super volcanic eruption.
11
What is NOT evidence of snowball Earth
Dropstones near the equater
World wide glacier striations
Low O18 ratios in oceanic sediment
High O18 ratios in oceanic sediment
12
Which of the following is not a climate "proxy"
Instrumental records
Tree rings
Oceanic sediments
Ice cores
13
What depositional environment might you find this?
Deep ocean
Lagoon
Glacial moraine
Shallow ocean
14
First life on the planet were likely using photosynthesis for energy.
True
False
15
How do we know the Physical properties of the Earth?
Seismisity
We don't
Drilling logs
Meteorites
16
Why are the oceans salty?
Salt comes out of mid oceanic volcanoes
During the Hadean and early Archean, salt rained from the clouds
Ions from weathered rocks make their way to the oceans and are not removed
Some oceanic critters leave salt as a waste product
17
What type of unconformity is shown?
Disconformity
Angular unconformity
Buttress unconformity
Non conformity
18
What type of sedimentary rock is this?
Sandstone
Limestone
Shale
Conglomerate
19
What is this called?
Nanocline
Syncline
Anticline
Monocline
20
What plate boundary might you find a Benioff zone?
Convergent
Divergent
Oceanic
Transform
21
Which is NOT a type of sedimentary rock?
Clastic
Quartz
Inorganic/chemical
Organic
22
All elements formed in the big bang
False
True
23
Which of the following were NOT used by Wegner to argue Continental Drift
Age of the continental plates
Fossil distributions
Glacial deposits
Fit of the continents
24
The magnetic poll is rather stagnant.
False
True
25
What came first?
Formation of the Core
First oceans
Late heavy bombardment
Formation of the moon
26
What is the term that describes the separation of Earths Layers?
Nebular theory
Latent heat of formation
Differentiation
Isotopic decay
27
How many major mass extinctions have occurred?
5
6
4
3
28
Where is the oldest stratigraphic beds in this image>
In the middle
On the outside
29
Which of the following is NOT a Milankovitch cycle
Precession
Glaciation
Eccentricity
Obliquity
30
What evidence might you find of the first evolution of worms.
Chaotic bedding and burrows
Body fossils
Fossils in Amber
O18 isotope ratios
31
Which plate boundary setting might you find this fault?
Convergent
Transform
Oceanic
Divergent
32
What is magnetic declination?
The difference between true and magnetic North
The angle of a magnet relative to longatude
The reversal of magnetic polls.
The angle of a magnet relative to lattitude
33
What do scientists use to make paleogeographic maps of Earth?
magnetic inclination
Isotopic decay
magnetic declination
meteorites
34
What type of fault is this?
Thrust
Normal
Reverse
Strike-Slip
35
What is Steno's principle of superposition?
Unconformities represent eroded time
All sediments are deposited horizontally.
Rocks separated by a canyon were likely once connected.
The oldest strata lay at the bottom!
36
How do we know the Chemical properties of Earth?
Seismisity
We don't
Meteorites
Drilling logs
37
How did Hubble discover that galaxies are moving away from one another?
Blue-shift
Calculating the age of the universe
Red-shift
Background radiation
38
What defines an Isotope?
Varying Neutrons
Varying electrons
Combining elements.
Varying protons
39
What was the first evidence of photosynthesis?
The land bleed red
CO2 in the atmosphere
We have fossils
Rust in the oceans
40
What was the Late Heavy Bombardment?
Formation of the universe
Formation of the solar system.
A violent assault of asteroids hitting early earth.
Formation of the Moon
