Dynamic Planet Final Mock Assessment
Quiz by Jason Wang
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- Q1
How much of the world’s freshwater is concentrated in the great lakes?
30%
22%
24%
21%
30s - Q2
Which of the following correctly describes a Meromictic Lake?
A lake that has uniform temperature from top to bottom at least once a year
A lake which has layers of water that do not mix
A lake that has layers mix at least once per year
None of the above
30s - Q3
Which of the following is an example of lithification?
Colonial Vertebrates
Algae
Sedimentary
None of the above
30s - Q4
Which of the following are formed through meander bend cutoffs, channel avulsions (abandonment of an entire channel segment), or mid-channel deposition and subsequent vegetation?
Anabranching Rivers
Straight Rivers
Meandering Rivers
Braided Rivers
30s - Q5
What type of drainage pattern is this:
Parallel Drainage
Rectangular drainage patterns
Contorted patterns
Dendritic Drainage
30s - Q6
What is the difference between porosity and permeability in rocks?
Porosity is the percentage of void space in a rock, while permeability is percentage of rock space
Porosity is the ability of fluids to move through rocks, while permeability is the percentage of void space in a rock
Porosity is the percentage of rock space, while permeability is percentage of void space in a rock
Porosity is the percentage of void space in a rock, while permeability is the ability of fluids to move through rocks
30s - Q7
Which type of valley is characterised by steep sides that curve at the base of the valley wall?
V-Shaped Valley
Glacial Troughs
Flat-Floored Valley
S-Shaped Valley
30s - Q8
Which of the following options best explains why spring overturning may occur if warm water tends to be less dense?
Evaporation increases in Spring, which increases salinity and density
Water is densest at around 277K while it remains liquid down to 273K
The lack of an ice layer causes Ekman pumping during the Spring
Melting ice introduces cold, freshwater into the deeper parts of the lake, decreasing its density, allowing easier resurfacing.
30s - Q9
You are a geologist in the scablands in Washington state when you observe some of the debris seems to have a reversed grading to them - finer sediment is found at higher elevation along a slope and coarse gravels are found at the bottom. Knowing the geologic history of this region (downstream from major glaciers during the last glaciation), best explains these features?
These are examples of Lowe sequences in which an earthquake occurred during a period that stirred the sediment and inverted its deposition sequence.
These are examples of Bouma sequences that have been uplifted.
These are flood deposits in which water rushed up the slope and slowed down which caused inverted bedding.
These were deposited by cascade waterfalls that picked up speed moving downslope and washed away any finer sediment downslope but deposited sediment upslope.
Faulting inverted the relative elevations of the sediment.
30s - Q10
A paper boat travels at the same speed as a river along the thalweg of a river 4 meters wide. It takes 15 minutes traveling at 0.4 m/s to traverse a straight line distance of 240 meters. What is the approximate sinuosity of the river?
1.33
1.50
1.67
1.75
30s - Q11
Flash flooding is much more of a concern in regions that went through prolonged drought. Which of the following best explains the most important factor?
Decrease in vegetation associated with drought leads to decreased water absorption.
During a drought, bacteria create specific proteins and lipids that are highly hydrophobic and decrease infiltration rate
Droughts lead to compaction and decrease in topsoil porosity and permeability
Dried ground becomes more hydrophobic since its surface area decreases
Droughts lead to more aeolian erosion of clays leading to decreased permeability
30s - Q12
Darcy’s Law would be valid for which of the following situations?
Water flowing through an aquifer
Honey flowing through a series of thin horizontal pipes
Airflow over an aircraft wing in flight
Water flow around the bow of a ship
30s - Q13
Limestone pavement is a karst feature of exposed limestone. The following image shows a representation of limestone pavement. Select all of the following true statements.
a. Feature 1 is an example of a grike, a section of pavement separated from adjacent segments. b. Grikes develop along joints in limestone.
c. Feature 3 is an example of a karren.
d. Karrens grow in size predominantly through chemical weathering by water.
e. Karrens have the potential to hold a colony of soil in the far future.
b, d, & e
a, b, c, & e
d & e
a, b, & d
30s - Q14
A bog with a relatively low pH compared to nearby river fed lakes is likely to be best described by which of the following?
Minerotrophic
Ombrotrophic
Euxinic
Anoxic
Dystrophic
30s - Q15
What type of delta is this best categorized as?
River dominated Delta
Tide-dominated Delta
Gilbert Delta
Estuarine Delta
30s
