Chp 2: Types of Plate Boundaries
What are the 3 types of plate boundaries?
1. Convergent boundary 2. divergent boundary 3. transform boundary
There are 3 types of convergent plate boundaries
1. Oceanic - oceanic convergence 2. oceanic - continental convergence 3. continental - continental convergence
Tectonic Plates can move what 3 ways?
1. Toward each other 2. move away from each other 3. slide past each other
these mountains are formed by oceanic- continental convergence
Andes mountains
This trench is formed by an oceanic-oceanic convergence
Mariana trench
What is one of the most well known transform boundaries?
San Andreas Fault
T/ F: Transform boundaries are often found between two convergent, two divergent, or a convergent and divergent boundary?
True
True/False: The type of movement that occurs at the boundary between tectonic plates determines the type of plate boundary that exists between them?
True
A transform boundary is also called a ________ _______ boundary because crust is neither _____ nor _________ at this boundary (crust is conserved)
conservative plate/ created nor destroyed
A divergent boundary is also called a ___________ boundary because ____ crust or lithosphere is _____ at the boundary
constructive/ new/ created
This occurs where tow continental plates converge. Once plate subducts, melts and becomes part of the mantle. A mountain range forms in the other plate where crust is "squashed" together
continental- continental convergence
2 tectonic plates move towards each other at a ____ boundary
convergent
A convergent boundary is also called a _________ _________ boundary because one plate is slowly destroyed at the _______
destructive plate / boundary
2 tectonic plates move away from each other at a _____ boundary
divergent
these mountains are formed by continental- continental convergence
Himalayan mountains
The subducted plate ______ and becomes part of the ______
melts/ mantle
As the plate moves apart, ___ ____ from within Earth moves _____ and fills the space between the plates. The ____ ____ cools and forms new ______.
molten rock/ upward/ molten rock/ crust
Often mountains or volcanoes from on the continental plate near the boundary
oceanic - continental convergence
Often underwater volcanoes form near the boundary in the other plates
oceanic convergence
This occurs where 2 plates made of oceanic crust converge. Once plate subducts under the other, forming a trench. The subducted plate melts and becomes part of the mantle
oceanic convergence
This occurs where an oceanic plate converges with a continental plate. The oceanic plate subducts under the continental plate because its denser. A trench forms at the boundary
oceanic- continental convergence
2 tectonic plates slide past each other at a _____ boundary
transform
T/F: At a convergent boundary the denser plate subducts or moves below the less dense plate
true
