The first 3 types of plate boundaries that are listed are divergent boundaries (where new crust is generated as the plates pull away from each other) convergent boundaries (where crust is destroyed as one plate pulls away from each other) and transform boundaries (where crust is neither produced nor destroyed as the plates slide horizontally past each other)
2. What does the word divergent mean in regard to plate movement? What forces the plates to move apart at divergent boundaries?
The word divergent in regards to the plate movement is that the plates move apart, and a new crust forms. What forces the plates to move apart is when magma pushes up from the mantle.
3. Give an example of a specific mid-ocean ridge where sea-floor spreading and divergent boundaries occur. What country sits directly on top of this ridge? What are the red triangles that are shown on the map of this country?
The mid-ocean Atlantic ridge is a sea-floor where it spreads and divergent boundaries occur. The country that sits on top of the ridge is Iceland. The red triangles that are on the map of Iceland are the volcanos in Iceland.
4. What does the word convergent mean in regard to plate movement?
The word convergent means in regards to plate movement is that its called a very slow “collision” by some, and “that takes place between plates depends on the kind of lithosphere involved”.
5. Find the diagrams shown on the website for each of the following kinds of plate boundaries. Label and post the three diagrams on your blog.
a. Oceanic-continental convergence
b. Oceanic-oceanic convergence
c. Continental-continental convergence
ON AN EARLIER POST^^
6. When one plate gets pushed below another plate it is called subduction. What geologic features form on Earth’s surface directly above the subduction zone in the case of:
a. oceanic-continental convergence? a deep sea trench, and a volcanic arc
b. oceanic-oceanic convergence? deep sea trench and an island arc
c. continental-continental convergence? high mountain range
7 .What is a transform boundary? What geological disturbance is caused along transform boundaries? Where in North America is there an example of this type of plate boundary?
Transform boundaries is a zone between two plates sliding horizontally past one another. The geologic disturbance that is caused along the transform boundaries is shallow earthquakes. There is a type of this plate boundary found in California, San Andreas fault zone.
8. Using the Internet and a focused search, identify the type of plate interaction that caused the following features: Specify what kind of boundary, and what kinds of plates are interacting there.
a .Mid-Atlantic Ridge- divergent tectonic plate boundary and the type of plates interacting is oceanic-oceanic
b. Kuril Trench- The kind of boundary is a convergent boundary. It is an oceanic trench, which was formed as a result of subduction. The plates that are interacting are oceanic-continental.
c. Phillipine Islands- The kind of boundary is a convergent boundary, and the plates are oceanic-oceanic.
d. East African Rift Valley- The kind of boundary is a divergent boundary, and the plates are continental-continental.
e. Red Sea- The kind of boundary is divergent, the plates are oceanic-oceanic.
f. Peru-Chile Trench- The kind of boundary is convergent, the kind of plates are oceanic-continental
g. Aleutian Islands- The kind of boundary is an convergent, and the kind of plates are oceanic-oceanic
