Geography
over the past 5000 years the Mississippi river had how many distinct delitactic formation?
7 or 8
Which of the following regions is probably the most tectonically active at this time?
Himalayas
Continental crust is basically___ whereas oceanic crust is basically__
granite; basalt
The principles of buoyancy and balance, when applied to Earth's crust, helps us to explain fluctuations in Earth's outer crust, a property known as
isostasy
Frost wedging is an example of ________ weathering processes
physical
El Niño
the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific
Oceanic crust subducts under continent because
The continental crust is less dense
Which of the following is likely to occur if the gradient of a stream increases?
The stream will begin to erode its channel and/or its banks.
Which of the following is the correct sequence of climate from the equator to the pole?
Tropical --> Desert --> Mesothermal --> Microthermal --> Polar
Which of the following lists of processes are in the correct sequence as to their occurrence in nature?
Weathering, erosion, transport, deposition.
as a discharge of stream increases what is happening
Width, depth, and velocity all increase.
The dynamic equilibrium model refers to
a balancing act between tectonic uplift and rates of denudation by weathering and erosion in a given landscape.
What is the correct sequence of divisions in the geologic time scale, from largest to smallest?
eon, era, period, epoch
Which of the following is not a type of physical weathering process?
hydrolysis
entrenched profile
is a river or stream that flows in a narrow trench or valley cut into a plain or relatively level upland
Which of the following is incorrectly matched?
karst towers - formations created by the merging of stalactites and stalagmites
The process that breaks down rock at the Earth's surface through disintegration of rocks into mineral particles or dissolving it into water is
weathering
Which of the following is incorrectly matched?
weathering —exogenic breaking and dissolving the crust
Longest river and largest river
Amazon river
Uniformitarianism assumes that
the same physical processes we see today are a key to understanding the processes that have been operating throughout geologic time.
The degradation of a landscape by weathering, erosion, and transportation has an ultimate goal of reducing the landscape down to
Base level, namely sea level
Bed load is moved by
Both saltation and traction, but not suspension
Which of the following stream channel forms is likely to develop when aggradation greatly exceeds erosion?
Braided channels.
The total possible load a stream can transport is its____, whereas a stream's ability to move particles of specific size is its_____.
Capacity; competence.
Core areas of mantle, correct sequence
Crust, mantle, outer crust, inner crust.
Talked about two types of volcanos explosive and effluent which one is fast and which one is slow
EXPLOSIVE IS FAST AND EFFLUENT IS SLOW
Rivers east of the continental divide in the Rockies drain into the drainage pattern, why we have that kind of pattern
Gulf/Atlantic drainage.
How does the formation of a natural levee impact flooding?
Natural levees raise the height of the stream channel, reducing the amount of flooding that will occur on the floodplain
The side of a meandering river with a beach area is called a _____, whereas the side cutting into the bank is called a _____.
Point bar (deposit) ; Cut bank (erosion)
Stream drainage patterns are determined by which of the following?
Slope, differing rock resistance, climatic and hydrologic variability.
hypsographic curve is
a generalized curve showing Earth's surface by area and elevation in relation to sea level.
orogenesis refers to
a mountain-building episode that thickens continental crust.
What is a natural levee?
a ridge of flood deposits next to a river channel
kyoto protocol
an international treaty aimed at combating global warming; adopted in 1997, took affect in 2005.
The formation of karst topography,
calcium carbonate process of CARBONATION
If you followed the river from its headwaters to the ocean, you would observe the clarity decrease because of
changes in the amount of suspended load and an increase in amount of clay due to weathering of the load and influx of sediment into the river only.
Hydrolysis, hydration, oxidation, and carbonation are all examples of ________ weathering processes.
chemical
Exfoliation and pressure-release jointing are examples of ________ weathering
physical
hypsography
the branch of geography concerned with the determination and mapping of the relative elevation of areas of land.
Climate
the long-term atmospheric condition - including extremes that may occur
What is a floodplain
the wide, flat, low-lying area of land found on both sides of the river channel
