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Plate Techtonics Flashcards | StudBud
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Plate Techtonics
Plate Techtonics
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Answers
1
Where do convection currents lay that drive the plates?
In the crust
Middle Mantle
Lower mantle
Currents in the ocean
2
What type of plate boundary has a dividing motion?
Insurgent
Divergent
Transform
Convergent
3
What evidence is presented that the continents were always moving away from each other?
Oil in the crust on each continent
Matching magnetic bands
matching fossils from each continent
Same salt water in ocean near continents
4
What type of plate is more dense?
Transform plates
Oceanic plate
Continental and oceanic
Continental plate
5
What are Techtonics plates?
Plates that move the earth
Different parts of the crust that float over the mantle
Crust that moves the ocean
Plates that cause tsunamis
6
Why did people think that Wegener was crazy and didn't believe him?
Continents have stayed the same
No one believed that there was a Pangea
Wegener lacked crucial evidence that the earth was moving
The earth would be bigger
7
What type of movement does the plate boundary Convergent have?
Sliding Movement
Pulling away/dividing
Clockwise
Colliding/pushing together
8
What other evidence for Continental drift is there?
Continents have always been moving
Continents don't have similar geological features
Continents split apart
Continents fit like a puzzle
9
What 3 types of geological features are created from convergent boundaries?
Island Arcs, trenches, and ocean ridges
Faults, folded mountains, volcanoes
Folded Mountains, Volcanic Mountains, Island Arcs
trenches, faults, ocean ridges
10
What is evidence about the Sea floor spreading theory?
Glaciers form
Rocks near midocean ridge are younger than near continents
Volcanoes under the sea
Underwater mountain ranges
11
What discovery provided the evidence that Wegener was missing?
A fault in the earth
Mountains on continents
An earthquake
A crack in the middle of the sea floor
12
What does Alfred Wegener Continental Drift theory state?
Continents fit like a puzzle
The sea floor is spreading
Plates move the earth
The continents have always been moving and were one landmass
13
What is a real-life example of a geological feature of a convergent boundary?
Rio Grande Valley
Grand Canyon
Appalachian mountains
San Andreas Fault
14
What drives the plates to move located in the asthenosphere?
Magma
Convection Currents
Upper mantle
Lower mantle
15
Who came up with the Continental Drift theory?
Issac Newton
Alfred Wegener
Harry Hess
Albert Einstein
16
What is subduction?
When the less dense plate sinks under the denser plate
When two plates collide
When a denser plate sinks under the less dense plate
When two plates divide
17
Which scientist came up with the theory "Sea Floor Spreading" in the 1960s?
Albert Richtofen
Harry Hess
Albert Einstein
Alfred Wegener
18
What geological feature is created from a transform boundary and a Continental/Oceanic Plate?
Faults
Volcanic Mountains
Deep Sea Trenches
Island arc
19
What catastrophic event is caused from a transform boundary?
Earthquake
Thunderstorm
Volcanic Eruption
Flood
20
What are the two types of crust?
Oceanic and Atlantic
Oceanic and continental
Continental and continental
Oceanic and oceanic
