Continents and Stability
What do we call the stable region of the continent?
Craton
When did they discover that the ocean was not featureless?
1950
He is the proponent of the Seafloor Spreading Theory.
Harry H. Hess
What type of plate has a surface area of 1 million - 20 million kilometers?
Minor Plate
When the charged particles from the sun during violent solar storms slip through the magnetosphere near the geomagnetic poles, what phenomenon occurs when this reacts to the gases in the atmosphere?
Aurora borealis or Northern Lights
Stable region of the continents are formed due to repeating rifting of the plates. What do we call the process of the formation of these stable regions?
Cratonization
What is the first supercontinent that was identified by geologist?
Pangea
True or False. Mid-Atlantic Ridge is a fast spreading center.
False
This type of plate boundary occurs when two tectonic plates are sliding past each other.
Transform Plate Boundary
Who are the cartographers who published the Physiographic Map of the North Atlantic?
Bruce Heezen and Marie Tharp
Due to the forceful collision of tectonic plates, region of a continent is pushed into the interior, thus making other mountains undergo erosion which make the surface flat. What do we call the eroded mountains?
Shield
Who first proposed that plate tectonic are moving?
Abraham Ortelius
The geomagnetic reversal happens for every 300,00 years. How many years is the current magnetic arrangement been intact?
780,000
An area on the Earth's tectonic plates dives back into the mantle.
Subduction Zones
Give the three types of convergent boundary.
What do you call the sloping area of the beach which is part of the ocean and the landmass. This is also defining the continents.
Continental Shelves
Collision of two tectonic plates forms mountain. The process of mountain building is called?
Orogeny
The SONAR stands for?
Sound Navigation and Ranging
Enumerate 3 specific effects of plate tectonics?
Earthquake, Volcano, Mountains
It comprised of platforms that were primarily stabilized during the Precambrian period.
Continental Nuclei
Give at least 2 factors why the surface of the continents changes many times.
Erosion , Build up of Sediments
Give at least 2 evidences that proves the continental drift theory?
Fossil Distribution, Shape of Continents
True or False. Seafloor spreading occurs at convergent plate boundaries.
False
What are the three mechanism related to plate movement?
Thermal Convection, Slab pull, Ridge push
A continental area covered by relatively flat or gently tilted, mainly sedimentary strata, which overlie a basement of consolidated igneous or metamorphic rocks of an earlier deformation.
Platform