Plate Tectonics
Terms
Earth inside and out
Think again
Miscellaneous
100
True or false
Instead of colliding head on, plates sometimes slip or grind past each other and create folds or fractures in the earth.
False - Fault - creates fractures in the earth
100
A circle of volcanoes surrounding the pacific ocean
Ring of fire
100
True or False
The Mantle is nearly solid. It has pockets of magma within itself
True
100
People talk about Eurasia, America and not including Antarctica as a continent.
According the United States What are the 7 continents?
N America,S America ,Asia,Europe,Australia,Africa,Antarctica
100
Volcanoes were named after a god from the romans. What is this god’s name ?
Vulcan
200
What is this?
Spreading
seafloor spreading
200
One of the internal forces that involve the movement of magma inside the earth
Volcanism
Volcanoes
200
This part is extremely hot yet surprisingly dense and solid due to heavy pressure
Inner Core
200
People didn’t believe or understand how the continents were able to move. What is the one term or force that helps explain the movement?
Convection
200
What is the difference between an island and a peninsula?
An island is a piece of land COMPLETELY surrounded by water
A peninsula is a piece of land NEARLY surrounded by water
300
When an oceanic plate meets a continental plate, the oceanic plate slides under the lighter plate and down into the mantle. What is this?
Subduction
300
The African plate and the Eurasian plate are both continental plates. What is the term for the collision that may occur between them?
Converging/convergent
300
What is the difference in elevation between the highest and lowest points called?
Relief
300
Scientists studied the differences with rocks in the ocean floor and the rocks on the continent. To their surprise what is the 1 difference they found with the rocks in the seafloor as compared to the rocks on the continent?
The rocks on the continent were older than the rocks on the ocean floor
The rocks on the ocean floor were younger than the rocks on the continent
300
The idea of Pangea and the continental drift theory came from this person
Alfred Wegener
400
List the possible interactions between the Earth’s plates that can occur
Subduction, spreading, converging, faulting (folding)
400
What are these?
Faults and folds
400
Name 4 kinds of landforms that was discussed in class
Mountains
Hills
Plateaus
Plains
Rivers
Islands
Peninsulas
400
The Continental plates are thicker than the oceanic plates, however when subduction occurs, what happens and why?
Oceanic plates go down because they are heavier than the Continental plates.
Continental plates are lighter and they go above the oceanic plates during subduction.
400
Molten rocks from the Mantle can heat underground water. What 2 things can be produced from the heated underground water?
Hot springs, Geysers
500
What’s the difference and creation between continental convergent and oceanic convergent?
Continental convergent pushes up against each other, creates mountains
Oceanic convergent, one goes underneath, creates island groups
500
What are hot regions deep within the earth’s mantle that produce magma that rises towards the surface of the earth?
Hot Spots
500
The crust is a rocky surface layer that differs in length -If the crust is beneath the oceans it is __miles/Km thick. If the crust is beneath the continents it is __ miles/Km thick
5 miles & 22 miles
8 km & 35 km
500
Plate tectonic Theory was something scientists kept disagreeing with. What two other terms or theories help support PTT?
Continental Drift Theory, Seafloor spreading
500
Name 7 tectonic plates
African plate, Antarctic plate, Arabian plate, Australian plate, North American plate, South American plate, Caribbean plate, Cocos plate, Eurasian plate, Gorda plate, Iranian plate, Nazca plate, Pacific plate, Philippine plate