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Exploring Africa's Physical and Cultural Geography Using ArcView

Activity 4 Answer Key: Plate Boundaries, Earthquakes, and Volcanoes

Step 8.

A) [The majority of the earthquakes in the world are located at, or near, plate boundaries. Plates are always moving and building up pressure. Convergent boundaries exist where plates collide, creating mountain chains and volcanoes. Divergent boundaries exist where plates spread apart. Transform boundaries exist where plates slide past each other.]

B) [Most of Africa's earthquakes occur in the middle of the African continent (or plate), far from any plate boundaries.]

C) [The African Rift Zone is located in the countries of Ethiopia and Kenya.]

Step 9.

D) [The largest recorded earthquake was a 9.3 which occurred in 1996 on the continent of Asia.]

Step 10.

E) [Mt. Kilimanjaro is the tallest mountain in Africa at 5895 meters, located near the border of Kenya and Tanzania.]

Additional Reading:

The Earth is formed of several layers that have very different physical and chemical properties. The outer layer, which averages about 70 kilometers in thickness, consists of about a dozen large, irregularly shaped plates that slide over, under and past each other on top of the partly molten inner layer. Most earthquakes occur at the boundaries where the plates meet. In fact, the locations of earthquakes and the kinds of ruptures they produce help scientists define the plate boundaries. http://pubs.usgs.gov/gip/earthq1/

*** End of Activity 4 for ArcView Answer Key ***

 

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