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27 Cards in this Set
- Front
- Back
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When and who observed and wrote that the continents could fit together like a jigsaw puzzle.
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Alfred Wegener
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What is a name for the "super continet"
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Pangea
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When was Wegener's super continent theory widely accepted? Why?
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around the 1960s
-A theory of sea floor spreading which illustrated how the plates are able to move was presented. |
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Who presented the theory of the sea floor spreading which illustrated how the plates are able to move?
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Hess
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What are the three types of plate boundaries?
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Convergent, divergent and transform.
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Boundary:
Convergent |
Plates: continental-continental
Type: Collision Zone Resulting feature: Mountains Example: Himalayas |
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Boundary:
Transform |
Plates: oceanic-oceanic
Type: fault resulting feature: earthquakes, tsunami example: Japan |
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Boundary:
Divergent |
Plates: oceanic-oceanic
type: rift valleys resulting feature Mid-ocean ridge example: iceland mid atlantic ridge |
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Boundary:
Transform |
plates: ocean-ocean
type: fault resulting feature: tsunamis example: san andreas fault |
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Boundary:
Convergent |
plates: oceanic-oceanic
type: subduction zone resulting feature: deep ocean trenches example: phillipines (islands) |
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boundary:
divergent |
plates: ocean-ocean
type: rift valleys resulting feature: bodies of water example: red searift |
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boundary:
convergent |
plates: continental-oceanic
type: sub-duction zone resulting feature: volcanic mountains example: Andes (mountains) |
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What is the outermost layer of the earth called?
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crust
also called the Lithosphere |
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What slides over the hot plastic portion of the mantle?
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the crust or lithospher
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What is the hot, plastic portion of the mantel called?
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Asthenosphere
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What is the outer core made of?
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Liquid iron and nickle
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What is the inner core mode of
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solid iron and nickel
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What does the outer core create?
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the Earth's magnetic field
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Describe one of the two types of the crust:
OCEANIC |
thinner, less dense
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Describe one of the two types of the crust:
CONTINENTAL |
Thick, very dense
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What is a hotspot?
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A plume of magma from the mantle that usually makes volcanos.
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Give two examples of hotspots.
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Hawaii and Helena
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The 2010 Chilean earthquake shifted the city of Santiago 24 cm to the West. If the earthquake lasted 90 seconds, what was the velocity of the shift?
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?
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An 843 gram piece of debris is ejected from a volcano and travels a distance of 4.3km in 3.7 seconds.
A. Calculate the velocity and acceleration of this piece of debris. |
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An 843 gram piece of debris is ejected from a volcano and travels a distance of 4.3km in 3.7 seconds.
B. Calculate the momentum of this piece of debris. |
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An 843 gram piece of debris is ejected from a volcano and travels a distance of 4.3km in 3.7 seconds.
C. Calculate the weight of this piece of debris. |
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The approximate mass of an oceanic plate is 8.3 x (10 to the 22nd) kg. With how much force will it converge with another oceanic plate if its acceleration is 7.5 x (10 to the negative 15) m/(s to the 2nd)?
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--That stuff is put in parenthesis because I can't make the numbers look like they're exponents.-
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