Vocabulary
Picture It!
Types of Boudaries
Geological Landforms and Events
Mixed Bag
100
This is where two plates meet.
Boundary
100
Name the boundary believed to be responsible for this geological landform or event. (Be specific!)
Convergent Plate Boundary (Continental-Continental)
100
This plate boundary occurs when two plates move away from each other.
Divergent Plate Boundary
100
The San Andreas Fault is a result/caused by this plate boundary.
Transform Plate Boundary
100
Convection Currents occur in this layer of the earth.
Mantle
200
This is the movement of fluid caused by the rising of heated particles and the sinking of cooled particles.
Convection Current
200
Name the boundary believed to be responsible for this geological landform or event. (Be specific!)
Divergent Plate Boundary (Oceanic-Oceanic)
200
This type of plate boundary occurs when two plates slide past each other horizontally.
Transform Plate Boundary
200
The Himalaya Mountains is believed to be a result of this plate boundary.
Convergent Plate Boundary (Continental-Continental)
200
This is a weak spot in the crust where magma has come to the surface.
Volcano
300
This is a deep, steep-sided canyon in the ocean floor.
Trench
300
Name the boundary believed to be responsible for this geological landform or event. (Be specific!)
Covergent Plate Boundary (Oceanic-Continental)
300
This plate boundary occurs when two plates move towards each other.
Convergent Plate Boundary
300
The Mid-Atlantic Ridge is believed to be a result of this plate boundary.
Divergent Plate Boundary (Oceanic-Oceanic)
300
How many major lithospheric plates are there? Name them!
There are 7 Lithospheric Plates.
1) North American Plate
2) South American Plate
3) Pacific Plate
4) Eurasian Plate
5) African Plate
6) Indo-Australian Plate
7) Antarctic Plate
400
This is an area where magma from deep within the mantle melts through the crust above it.
Hot Spot
400
Name the boundary believed to be responsible for this geological landform or event. (Be specific!)
Transform Boundary (Continental-Continental)
400
Name the two zones that occur at a Convergent Plate Boundary. Tell what type of plates converge at these zones.
Subduction Zone (Oceanic-Continental) and Uplift Zone (Continental-Continental)
400
Mount Saint Helens is a volcano in the Cascade Range and is believed to be a result of this plate boundary.
Convergent Plate Boundary (Oceanic-Continental)
400
Lithospheric Plates are large pieces of Earth that move over this area.
Asthenosphere
500
Ths is the name of the chain of volcanoes that lines the Pacific Rim.
Ring of Fire
500
Name the boundary believed to be responsible for this geological landform or event. (Be specific!)
Convergent Plate Boundary (Oceanic-Continental)
500
Explain what happens at a convergent plate boundary between an oceanic plate and a continental plate. Be specific!
The oceanic plate subducts below the continental plate because it is more dense. When the oceanic plate subducts, pieces of the oceanic plate will melt back into the mantle. The continental plate rises above the oceanic plate because it is less dense. This also creates a subduction zone where you will find a trench.
500
The Valdivia Earthquake had a magnitude of 9.5 and claimed about 1,655 lives. Using your knowledge of earthquakes and plate boundaries, describe what happened before, during, and after this event.
Before this event, two plates were sliding past each other horizontally at a transform plate boundary. At some point, rocks or pieces of the crust became stuck and pressure continued to build. Then, the two continental plates broke free (pressure released) causing the plates to vibrate in a ripple effect. This shaking caused buildings to fall, roads to become destroyed, and claimed many lives.
500
This describes the large-scale processes that affect the structure of the earth's crust.
Tectonics