Oceanography Ch. 1
The deepest point in the ocean is deeper than Mount Everest is high
true
continental crust is less dense than oceanic crust
true
the origin of earths oceans and atmosphere are a result of density stratification
true
The GPS system is a tool used for
determining surface location
The Oceans are believed to have been formed about
4 billion years ago
Approx. what percentage of the earth is covered by oceans
71%
During the age of discovery these events occurred
Captain James Cook explored the pacific, Magellan circumnavigated the earth, Columbus discovered the new world
What determines the Order of earths layers
Density
Density stratification has caused our earth to be homogenous throughout
FALSE
Who circumnavigated the earth in the victoria
Ferdinand Magellan
The Physical property of the asthenosphere is best described as
Plastic
What is the deepest ocean on earth
Pacific
Charles darwin suggested that the changes organisms display through time were the result of
adaptations to different environmental conditions
science supports the explanation of the natural world that
best explains all available observations
The vertical movement of crust to accommodate additional weight or removal or weight is called
isostatic adjustment
The cosmological model for the formation of the sun and the rest of our solar system is the
nebular hypothesis
Stanley Millers 1952 experiment demonstrated
organic molecules could be created from the materials contained in earths early atmosphere and oceans
The early oceans and atmosphere are thought to have come from inside the earth from the process
outgassing
which gas was not abundant in earths early atmosphere
oxygen
the most accurate scientific estimation of earths age is based on
radiometric dating on rocks
The principal goal of science
to explain the causes and effects of observable natural phenomena
All of the continents could fit into the space occupied by the pacific ocean
true
Continental crust is made of rock that is relatively light in color
true
Earth is layered based on density , with the highest density material located the deepest
true
Earths internal layers can be described by their composition or by their physical properties
true
Molten Material will rise if it is less dense than the surrounding material
true
Molten material will sink if it is more dense than the surrounding material
true
The asthenosphere is a plastic layer that extends from the base of the lithosphere toa depth of about 700 km
true
The asthenosphere is very hot and contains areas of partially molten rock
true
The subdivisions of the geological timescale
were initially based on fossil evidence, extinctions and boundaries of sedimentary rock units
The age of discovery was the time period in ocean exploration history when
western europeans realized the vastness of the earths oceans