EARTH STRUCTURE
Convection currents occur in what part of earth's layers?
Upper part of mantle
AT WHAT TYPE OF BOUNARIES WOULD YOU FIND VOLCANIC ACTIVITY?
Volcanoes & Ocean Trenches are geological features that are formed when 2 plates do what?
Come together, collide
Name the 4 main layers of the Earth from outside to inside.
Crust, mantle, outer core, inner core
CONVERGENT BOUNDARIES
A Subduction zone occurs when .....
Continental Drift
Which layer of Earth is the composed of liquid iron and nickel?
Outer core
WHAT TYPE OF BOUNDARY MAKES A MID OCEAN RIDGE?
DIVERGENT BOUNDARY
Folded mountains form when 2 continental plates....
collide, come together
What was the supercontinent called that explains when all continents were once connected millions of years ago?
Pangaea
In Which part of the Earth's layers are our Tectonic plates located?
Crust and upper mantle
At which type of boundary are Earthquakes most common?
Transform boundary
Identify the three differences between continental and oceanic crust.
continental thicker, less dense than oceanic crust. continental crust made of granite, oceanic made of basal
What is the name of the German geophysicist that formulated the statements that the continents were once connected due to continents fitting like puzzle pieces, fossils, and climatic zones?
Alfred Wegener
Name the layer that is the densest and hottest layer due to immense pressure.
Inner core
Rift valleys are created at what type of boundaries?
Divergent Boundary
Volcanic Island Arcs are created along a convergent boundary. How do these plates move?
One plate subducts under another plate
Name the 2 types of crusts and explain the process of seafloor spreading.
Oceanic and continental crust. 2 oceanic crusts pull apart and the magma upwells to cool and harden and make new seafloor.