Oceanography - Quizes Exam 1 Flashcards
As this is an online course, the best way to communicate with Dr. D is to:
email him at bdudendorff@polk.edu
The required textbook for the course is
Essentials of Oceanography
A supply that is needed for exams is
a #2 pencil for the scantrons
Quizes count ___ of the grade, HW counts ____ of the grade, Discussions count ____ of the grade, Lab counts ___ of the grade, each Exam counts ___ of the grade, and the final exam counts ___ of the grade.
10%, 7%, 10%, 25%, 12%, & 12%
The ____ is the quiz that counts toward your grade
first quiz attempt
Answers to the quizzes ___:
will be given by retaking the Quizzes after they ahve been closed, graded,and reopend with the answers available.
True or False: All chapters have discussions
false
To get full credit on each Discussion, you need to
make at least 2 posts of at least 100 words each (on topic) that are at least 24 hours apart and read the other posts in the discussion
The exams can be taken at:
in the lakeland TLCC, in the WH TLCC, at the JD Alexander in Lake Wales, or at any other approved testing center
To take the exam at PSC
bring a pencil and a photo ID and arrive at an hour before the testing center closes
The earth’s system that is the rigid layers of the solid Earth near the surface is the
Lithosphere
Which system or sphere of the earth involves water?
Hydrosphere
Which of the following is NOT a form of Solar Energy? A. Wind Energy B. Colo and Oil C. Water Power D. Geothermal Energy
D. Geothermal Energy
____ Is one of the biggest environmental problems because it influences all other pollution and makes almost all other environmental problems worse.
Population
Plan and animals materials are resources that can be replenished quickly. What kind of resources are they?
Renewable Resources
___ is due to an manade increase in the greenhouse effect
Global Warming
_______ affects plants and bodies of water by changing the pH of water in the air
Acid Rain
In science, a well tested and well accepted general explanation is called
a theory
_______ uses creativity to put parts together to form something new
synthesis
________ uses critical thinking to judge the value of material
Evaluation
The Big Bang occurred about __ years ago
13 billion
Which of the following is NOT evidence for the Big Bang?
A. the expanding Universe
B. The proportions of hydrogen, helium, and other elements
C. The clockwise rotation of the planets around the sun
D. the microwave background radiation
C. The clockwise rotation of the planets around the sun
Our Galaxy, the Milky way, is a ____ Galaxy
spiral galaxy
Stars generate most of their energy from
fusion of small ions into larger ions
The color of small starts are
red
True or False: the largest stars are the coolest stars
False
After the largest stop producing energy, the steller remnants that they form are ___
black holes
our solar system from from a
nebula
As far as it is known, the atmosphere has always contained large amounts of _____
Nitrogen
___ is the process of forming life from organic compounds
biogenesis
Currents in the Atlantic outside of the Mediterranean are
from North to South
The basis of the word ocean from Greek and Latin is
River
The library of Alexandria (Egypt) was
A. received logs from all ships that visited the port of Alexandria
B. was where the diameter of the Earth was first discovered
C. one of the greatest libraries of all time
D. All the above
D. All the above
Latitude measures __________ and longitude measures _____.
position north and south relative to the equator; position east and west relative to Greenwich England
True or False: The library at Alexandra is still one of the best libraries in the world; it is the oldest continuously running library in the world
False
The Vikings of northern Europe:
A. raided other parts of Europe during the dark ages
B. Colonized Iceland, Greenland, and briefly North America
C. helped lead to the end of the Dark Ages due to the rest of Europe’s cooperation in resistance to the raids
D. All of the above
D. All of the above
True or False: While measuring latitude accurately, using the location of the stars, was possible early on the measurement of longitude accurately, using a seafaring clock, was not possible until 1760
True
The Challenger Expedition:
A. Lasted from 1872 to 1876 and traveled around the world
B. led to the word oceanography
C. was the first purely scientific expedition, led by a 6 man scientific staff rather than a captain
D. All of the above
D. All of the above
The north pole was reached by expedition in ______ and the south pole was reached in ____.
1909; 1911
Advances in oceanographic technology include:
A. early navigation devices such as the compass, sextant, and seagoing clock
B. each sounding (sonar).
C. deep drilling ships
D. deep diving subs
E. Satellites
F. All of the above
F. All of the above
___________ arrive first at a sesimograph because they are the fastest seismic waves
P waves
The ____ is the brittle rock layer at the surface that can move around slowly because it floats on the layer below it
lithosphere
The earth’s interior stays very hot, rather than cooling faster than it really has, because heat is constantly being added by ___.
Radioactivity
Wegener’s hypothesis of Continental Drift was
not accepted by other scientists because Wegener could not explain how the continents moved
New plate material is created at ___.
Divergent plate boundaries
Plates move toward each other at
convergent plate boundaries
True or False: Seafloor spreading and magnetic reversals combine to form “magnetic stripes” on the seafloor
True
It is possible to test the actual movement of the plate over time, not just that the plates moved, using ____; with this the plate movements can be determined
Polar Wandering
The Emporer Seamount and Hawaiian Island chain was made by a _____ so the ages of the seamounts and islands ___.
Hot spot; are youngest at the southeastern end near the big island of Hawaii
Plate Tectonics is a _________ and Continental Drift is a _________. Which means, that Plate Tectonics is _____ and Continental drift is ________.
Theory; Discarded Hypothesis; Accepted; Not Accepted
There is more ocean area in the _____ hemisphere than on the ____ hemisphere.
Southern, Northern
The average depth of the ocean is about ___.
12,500 feet
Which part of the continental margin is the least sloped and is an extension of the land?
Continental Shelf
The west coast of Florida is a _____ continental margin and the east coast of Florida is a ____ continental margin.
Passive and Passive
Which part of the continental margin is the steepest?
Continental Slope
________ form when sediment fills in and smooths the rough seafloor
Abyssal plains
Volcanic activity due to an oceanic-oceanic convergent plate boundary results in ___
volcanic island arc
Trenches are found at ___ plate boundaries
convergent
Mid-oceanic ridges are found at ___ plate boundaries
divergent
True or False: Divergent plate boundaries, and the rifting and rift valleys that go along with the divergence, are always found in the ocean
False
______ sediment comes from life.
Biogenous
___ sediment comes form space
Cosmogenous
___ sediment comes from land.
Terrigenous
______ sediment comes directly from water.
Hydrogenous
Dust blown off the deserts by the wind that falls in the oceans is an example of ____ sediment
Terrigenous
The chalk cliffs of Dover in England is an example of ___ sediment
Biogenous
True or False: The largest column of sediment, often 2 to 3 miles thick, is found on the mid-ocean ridges
False
Smaller silt-sized sediment carried by rivers tends to __.
be deposited in the oceans far from the mouth of the river
True or False: Calcareous oozes are not found in the deep oceans below the CCD because below that level they dissolve in the water.
True
__________ uses sound waves to look with the ocean sediments and the igneous rock below them without actually sampling those sediments and rock
Seismic surveying
