Quiz 1 OCE 4008 Final Exam Study Guide

How much of the Earth's water is found in the ocean?
3%
67%
71%
97%
There were multiple sources of water that contributed to the ocean. How was the majority of the ocean's water formed?
The condensation of a cloud composed of dust and gas from exploded stars
The condensation and cooling of water vapor
The infiltration of comets
Run-off from continental land masses
What key characteristic marks the beginning stages of the collapse of a star?
The increase of temperature
The depletion of carbon and oxygen
The depletion of hydrogen
The expulsion of energy
What caused Earth to partially melt when being formed?
Impact of asteroids, comets, and debris
Gravitational Compression
Accumulation of decaying radioactive elements
A combination of all of these choices
What was the main requirement for the development of life on Earth?
Exposure to sunlight
Absence of free oxygen
Simple Sugars
Energization from electrical sparks
Why is biosynthesis unlikely to occur today as it did in Earth's youth?
Living organisms have altered oceanic and atmospheric conditions
There is less available oxygen in the atmosphere
Ozone is less protective from the sun's influence
The ocean’s do not contain enough free iron
A marine scientist is studying the amount of dissolved oxygen in a particular area. They are attempting to connect the data with the type of organisms found in that area. What kind of marine scientist might they be classified as?
Physical oceanographer
Chemical oceanographer
Marine biologist
Marine geologist
The composition of the Milky Way does not include:
Stars
Gases
Dust
Galaktos
What process accounts for the layers found in Earth?
Plate tectonics
Accretion
Density stratification
Subduction
How old are fossils that indicate the first life forms on Earth?
Between 1.2 and 1.5 billion years old
Between 2.6 and 2.7 billion years old
Between 3.4 and 3.5 billion years old
Between 4 and 4.2 billion years old
____ is a critical aspect of science.
The ability to operate in reverse
The ability to be refined with new information
Looking at data rather than being told
All of these choices are critical aspects of science
What had the most influence in irreversibly changing the Earth's atmosphere?
Formation of carbonic acid in the ocean
Production of oxygen from photosynthesis
Chemical breakup of water vapor by sunlight
Fluctuation in the atmospheric composition
A(n) ____ is a test involving manipulations made on conditions of a particular observation.
Hypothesis
Experiment
Theory
Scientific method
A(n) ____ is an explanation that can be tested by additional observations or controlled experiments.
Question
Science
Hypothesis
Scientific method
What process involves the clumping of small particles into larger masses?
Condensation
Coagulation
Secretion
Accretion
High levels of _____ could indicate life on other planets.
Free nitrogen
Carbon dioxide
Free oxygen
Bound nitrogen
What forms heavy elements such as gold, mercury, and uranium?
A protostar
Condensation
A supernova
A solar nebula
How long ago did the big bang catalyze the beginning of the universe?
13.7 bya
1.37 bya
4 bya
40 bya
The scientific method is characterized as:
An orderly process in which theories are proved to be absolutely true.
An orderly process in which a test simplifies an observation in nature by controlling the conditions in which they are made.
An orderly process in which theories are verified or rejected
A testable speculation or explanation of a theory
Francis Bacon thought the continents were once joined together, even naming the single continent Pangaea and the surrounding ocean Panthalassa.
True
False
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