Distribution
What makes up the lithosphere?
crust and upper mantle
If you are to see an island with two sliding plates, what type of plate boundary exist?
transform-fault
The name of the single supercontinent that existed 200+million years ago.
What do you call the soft, weak and plastic-like layer in the upper part of the mantle where plates float and move?
asthenosphere
Who proposed the idea that our planet’s seafloor spreads and is being continuously added with new solidified magma from the mantle?
H. Hess & R. Dietz
Geographically, what region makes the Philippines prone to volcanic eruptions and frequent earthquakes?
Pacific Ring of Fire
Explain what happens in a divergent plate boundary.
two tectonic plates that are moving away from each other
What geologic event is most likely to happen when two plates slide past each other?
Earthquake
What type of material will eventually rise during convection current in the mantle?
warmer material
What do you call the condition when the North Pole is transferred into a South Pole and the South Pole becomes the North Pole?
Magnetic Reversal
Surface wave causes the ground to shake in an elliptical motion, with no traverse, or perpendicular motion.
Rayleigh waves
What type of plate boundary has no subduction process occurring?
continental-continental
As the subducted plate continually goes down the area of mantle and reaches at the inner part of earth, what event could eventually take place?
Earthquake
The process that facilitate the movement of the crustal plates.
convection
What type of magnetic material makes up the entire composition of the seafloor that can act like a little compass needle and follow the Earth's magnetic field?
Iron
The soft layer in the mantle that is composed of very hot dense rock that flows like asphalt under a heavy weight.
Asthenosphere
At convergent plate boundaries where oceanic and continental crust meet, _________.
Oceanic crust is subducted
What is formed at the top of continental crust when continental and oceanic plate converged?
Volcano/ Volcano island arc
Illustrate the movement of molten rock materials in the mantle.
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Why did people chose to not believe in Wegener’s theory?
There is no evidence presented that will explain the driving mechanism that makes the plates move.
How is oceanic crust forced back into the earth’s mantle?
High dense
What do you expect to see at the mid-oceanic ridge?
Relatively young rocks
What is the topographic feature at A called and to which type of boundary is it?
sea trench, convergent
Why does the Atlantic Ocean get wider?
The seafloor spreading is faster than the subduction process.
Enumerate the pieces of evidence of continental drift theory.
Continental Jigsaw Puzzle, Location of Fossils, Coal Deposit, Paleomagnetism, and Earthquakes and Volcanoes.