Plate Boundaries 1
In this type of boundary, plates are moving towards each other.
convergent boundary
In this type of plate boundary, plates are moving apart
What are divergent boundaries
The thickest of layers
Mantle
In this type of boundary, plates slide against each other
transform boundaries
Which type of crust is denser (heavier). Oceanic or Continental?
What boundary caused the mid-atlantic ridge?
Divergent
What is likely to occur at a transform boundary?
Earthquakes.
List the layers of the earth in order from outside to inside.
Crust, Mantle, and core
New oceanic crust is created at what type of boundary?
Divergent Boundary
Why does oceanic crust subduct beneath continental crust?
What is- It is more dense
Why do transform boundaries have earthquake?
continental plates rubbing against each other causing friction
The layer of earth where convection currents occur.
Mantle
What was the supercontinent originally called?
Pangea
What oozes out of the earth when plates diverge?
What is magma
What piece of equipment measures earthquakes?
Seismograph
Where on a plate will the fewest geological events be experienced?
The area around the Pacific ocean that is geologically active.
Ring of Fire
List two pieces of evidence that supports Wegners theory of Continental Drift.
Continental jigsaw
Fossil Clues
Climate Clues
Rock Clues
When one plate slides under another and melts into the mantle
Subduction
Which type of crust is thicker?
Continental
This is when one plate goes under another.
subduction
What is the difference between magma and lava.
Magma - underneath the earth. Lava - outside.
Name a reason why oceanic crust will typically subduct beneath continental crust at a convergent boundary.
Oceanic crust is denser (heavier) than continental crust
What do continental to continental plate boundaries create?
mountains
Explain why the total amount of crust remain the same despite new crust being regularly formed.
New crust formation at mid-ocean ridges rises and cools to form new crust.
Old crust is destroyed at subduction zones - crust melts into magma.