Layers of the Earth
The least hot layer of the Earth
What is the crust
This theory states that the youngest rocks of ocean floors are at divergent boundaries, moving outward.
What is seafloor spreading
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
Earthquakes, Volcanoes, ocean ridges, and ocean trenches are usually located in relation to these
What is a plate boundary
The State bird of Utah
What is the Californian Seagull
The densest layer of the earth
What is the inner core
This is a seafloor landmark where new seafloor is being created.
What is the mid-ocean ridge.
What is the name of the supercontinent before the continents are what they are now?
What is Pangea.
This is the mechanism which causes the plates to move.
What is convection cycles in the mantle.
Hot air or liquid is less ________________ than cool air or liquid
What is dense
This is the layer of Earth where a convection current is happening.
This is a seafloor landmark where new seafloor is being destroyed.
What is deep-sea trench.
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
The Himalayan mountains are the result of a ___________________________ boundary.
What is continental-continental convergent boundary
This is the room number of this room.
What is K207.
Name the four layers of the earth.
The oldest type of plate is what?
Continental Plates
The mid-ocean ridge is an example of a ____________________ boundary and new __________ is being formed here.
What is divergent boundary; sea-floor/oceanic crust.
What part of the earth do plate tectonics ride on?
what is the asthenosphere
Oceanic crust is _________ than continental crust.
What is less dense under the ocean and more dense under the continents.
The three main pieces of evidence supporting the theory of continental drift.
What is continents fitting together like a puzzle, fossils matched on each continent, evidence of glaciers where they should never have been, and landforms such as mountains and rivers matched on continents.
Plate subduction often creates these two landmarks.
Deep sea trenches and volcanoes.
This type of convergent boundary does not have subduction.
What is continental-continental convergent.