Lesson 10

Where were Africa and South America in the past?

Lesson Objectives...

Analyze maps displaying patterns of large sets of data to determine that Africa and South America could have been touching at the MidAtlantic Ridge (spatial relationship) between roughly 125 and 146 million years ago.

6.4 Lesson 10 - Slides

Slide Presentation for Lesson 10...

This is the slide presentation used by your teachers when navigating through Lesson 10.

Where are the oldest rock layers? Why are they at the bottom while the youngest is at the top?

6.4 Lesson 10 - Handout - South America and Africa

Oceanic plates that were created over time were not always in existence. (Lesson 10)
Average rates of plate movement and plate direction can be used to determine where plates were once located. (Lesson 10)
Small changes to the distance between continents can add up to larger visible changes seen from a larger scale. (Lesson 10)
Older rock and associated fossils can be found under younger rock and fossils. (Lesson 10)
To support that two land masses were once together, patterns in data across the two land masses need to be similar or the same. (Lesson 10)
Data from rock strata, fossils, and other changes in land support that the African and South American continents were once together at the Mid-Atlantic Ridge. (Lesson 10)

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