WETMAAP Skill 3
Avery and Weeks Islands: Element 4

Skill 3: Visual Recognition
Element 4: Comparison of Topographic Quadrangles

 Materials:
          1963/1980  1:24,000 scale USGS Weeks Topographic Quadrangle
          1994           1:24,000 scale USGS Weeks Topographic Quadrangle

Exercise:

        1.   Lay the 1963/1980 Weeks Topographic Quadrangle and the 1994 Weeks Topographic Quadrangle in front of you.

        2.   The 1963 topographic map was updated with the 1980 aerial photography.  How are the differences in features between the two dates shown on the map?

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          3.       Were the changes shown between 1963 and 1980 land gain or land loss?

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4.      Recognize the differences between 1980 and 1994:
a)  in roads

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           b)  in buildings

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           c)  in water bodies on the islands

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                      d)  in the green layer

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