plate+tectonics+review

Here's your new review!

For questions 21 and 22, post some pictures of each! You can draw them or find them. Use the "insert images" button above (below and left of the E in the word Editor) to paste them in.

21. Be able to recognize each of these types of faults and folds and the force associated with it: normal, reverse, thrust, strike-slip, monocline, syncline,anticline. Reverse is top left Normal is top right

Strike slip is lower left Thrust is lower right  -molly

Monocline:    Anticline and Syncline: -Teri   22. Draw a horst-and-graben fault, labeling the foot and hanging walls, the type of fault, and the force associated with it.

Tension and Compression - Megan 23. Explain the formation of the Basin-and-Range province. __Plate Tectonics__ On this particular test, geography is important! Know the names of landforms and countries associated with plate tectonics.
 * It was formed from crustal extension within the North American Plate. The crust has been stretched very much. Basins and mountain ranges were formed in the process. -Nicole and Claire ****// What caused them to stretch? //**

24. Who was Wegener? What idea did he popularize? Wegener was a cartographer and meteorologist who popularized the idea of continental drift. --amy

25. Describe the theory of continental drift and why it was different from plate tectonics. 26. List and explain at least 6 types of supporting evidence for the theory of plate tectonics. -continents show fit along shelves -fossils match across continens -hot spots show plate motion -terranes show evidence of plate convergence -glacial striations match across continents -polar wandering shows plate motion --amy **// But you have to explain them!! //**
 * Continental drift is the theory that the continents used to be one large landmass called pangaea, and they have since broken apart and drifted away. Plate tectonics is the theory that the surface of the Earth is in constant movement.---Colleen **

27. Describe each type of plate boundary: convergent, divergent and transform. Convergent-plates come together Divergent-plates come apart Transform-plates rub together(side to side).---Colleen

28. What 3 types of convergent boundaries exist and what landforms are associated with each? Oceanic-Continental, Oceanic-Oceanic, Continental-Continental. O-C Landform: Mountain Range **// and what else? //** O-O Landform: Trench C-C Landform: "crumpled" mountains -molly

29. What is a subduction zone? If two plates meet, what determines which plate subducts? a subduction zone is when one plate goes underneath another plate. if 2 plates meet, the plate with more land stays above and the plate that is more oceanic goes underneath. --amy 30. What is an island arc system? Name a few geographic examples.
 * A chain of small volcanic islands such as Aleution islands, Tongol islands, Lesser islands, and Mariana islands.---Colleen **
 * // But what distinguishes them from islands such as //****// Hawaii //****//, which are also volcanic? //**

31. What 2 types of divergent boundaries exist and what landforms are associated with them? There is the oceanic boundary and the continental boundary. The oceanic boundary occurs when heat from the lithosphere rises causing a ridge. Landform: Mid-Atlantic Ridge. The continental boundary occurs as plates pull apart. Landform: East African Rift Valley -molly

32. What is the relationship between the age of ocean floor and its distance from the mid-ocean ridge? the farther from the mid-ocean ridge, the older the ocean floor is. --amy 33. What is thought to be the mechanism that “drives” plate motion?
 * The farther it is from the mid-ocean ridge the older it is.---Colleen **
 * convective flow -Nicole and Claire ****  NOOO....missing something!! **

34. What is paleomagnetism and how does it help to date rocks and show plate motions? paleomagnetism is when mafic igneous rocks point towards the north pole. it helps date rocks because where they point depends on their age. it shows plate motions because the north pole never actually moves, just the older rocks point in different places because the continents were in different places. --amy

35. Explain “polar wandering”. the north pole is in a "different place", because igneous, mafic rocks point to where it is. the north pole doesnt really move, it is just the continents moving due to plate tectonics. --amy

36. What are terranes? Give a geographic example of a piece of continent built of terranes. Terranes are little pieces of land that get stuck together. An example would be Alaska. --Stacy