Shared Flashcard Set

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Ch 19
Study guide
23
Environmental Studies
9th Grade
02/28/2013

Additional Environmental Studies Flashcards

 


 

Cards

Term
Wegener's continental drift hypothesis stated that all the continents once joined together to form...
Definition
A single continen
Term
the supercontinent in the continental drift hypothesis was called...
Definition
peagaea, meaning all land
Term
One kind of evidence that support wegener's hypothesis is that...
Definition
Term
according to the theory of plate tectonics, the uppermost mantle, along with overlying crust, behave as a strong, rigid layer...
Definition
the layer is known as the lithosphere
Term
in the plate tectonic theory, a plate can be made up of...
Definition
plates
Term
what kind of boundary occurs who two plates grind past each other without destroying or producing lithosphere...
Definition
(slide side by side each other) transform fault boundaries
Term
what type of boundary occurs when two plates move together, causing one plate to descend into the mantle beneath the other plate?
Definition
convergent boundary
Term
new ocean crust form at...
Definition
divergent boundaries
Term
what hypothesis states that the continents were once joined to form a single supercontinent?
Definition
continental drift theory
Term
which of the following was NOT used in support of the continental drift hypothesis>
Definition
Term
in the plates tectonic theory, the lithosphere is divided into...
Definition
plates
Term
A tectonic plate consist of...
Definition
uppermost mantle, along with overlying crust
Term
which of the following is a geographic example of a transform fault boundary?
Definition
San Andreas Fault
Term
which of the following results when divergence occurs between two oceanic plates?
Definition
divergence creates new seafloor. divergence causes ocean ridges and raft valley
Term
the Himalayas in South Asia are an example of what type of plate of boundary?
Definition
convergent boundary and result of continental-continental collisions.
Term
volcanic island arcs are
Definition
result of convergent boundary
Term
according to the property of palemagnetism what happened
Definition
rock formed millions of years ago thus show the location of the magnetic poles at the time of their formation
Term
how does the age of a seafloor sediments change with increasing distance from the ridge?
Definition
when the oldest sediment from each drill site was plotted against it's distance from the ridge crest, it was revealed that the age of the sediment increased with increasing distance from the ridge.
Term
the thermal convection that drives plate motion is caused by
Definition
unequal distribution earth's heat
Term
define each one
Definition
divergent- also called spreading center occurs when two plates moves on apart. this process results in upwelling of materials from the mantle to create new seafloor.
hot spots- concentration of heat in the mantle capable of producing magma , which rises to earth's surface. the pacific plate moves over a hot spot,producing the Hawaiian island.
lithosphere-rigid outer layer of earth ,including the crust an upper mantle
Pangaea- the proposed Super continent that 200 MY began break apart an form the present landmasses
Term
One kind of evidence that support wegener's hypothesis is that...
Definition
Term
what are the three main types of plates boundaries
Definition
convergent,divergant, transform fault boundary
Term
list the lines of evidence that supports the theory of plates tectonics
Definition
paleomagnetism, earthquake pattern, ocean drilling hot spots.
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