Plate Boundary Questions
#1

• Divergent boundaries - Anew crust forms when the old crust has moved away from each other.
• Convergent boundaries - When the crust is ruined when two crusts collied and one goes under another.
• Transform boundaries - The crust is fine when the crusts move away from each other horizontally.
  

#2
-Divergent means to move apart. They move because of magma moving up from the mantel.
#3
-The mid-Atlantic ridge, sitting on top of Iceland. The red triangles are Iceland's active volcanoes.
#4
-Plates are moving toward each other.
#5
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.




Oceanic-oceanic convergence









Continental-Continental Convergence










Oceanic-Continental Convergence.










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? Andes Mountains.
b. oceanic-oceanic convergence? Marianas Trench
c. continental-continental convergence? Himalayas


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? A transform boundary is where two plates are sliding horizontal past each other.

8. Using the Internet and a focused search, identify the type of plate interaction that caused the following features:
a. Mid-Atlantic Ridge: Divergent Boundaries. Oceanic-Oceanic Divergence.
b. Kuril Trench: Convergent Boundaries. Oceanic-Oceanic convergence.
c. Phillipine Islands: Convergent Boundaries. Continental-Continental Convergence.
d. East African Rift Valley: Divergent Boundaries. Continental-Continental Divergence.
e. Red Sea: Divergent Boundaries. Continental-Continental Divergence.
f. Peru-Chile Trench: Convergent Boundaries. Oceanic-Continental Convergence.
g. Aleutian Islands: Convergent Boundaries. Oceanic-Oceanic Convergence.

Geologic Timeline: Follow Up Questions

1.) For a complex multi-cellular life to take hold the cell would need water and oxygen. 

2.) I think the Archaean Eon is the most essential in terms of the development of the Earth because it is the first. With out that eon the earth would not have been created, that was the building blocks to our planet. That eon was when the Earth was born and took it's first steps toward having life on it.

3.) The significance of the presence of humans in the context of the entire history of the Earth is very little. In our timelines we were a tiny section of what the Earth has been through. We could go longer, but for the present time we have a very little significance on this Earth, it survived for billions of years without our presence.