1 A) the Archean Shield B) the Northern Shield C) the Proterozoic Shield D) the Canadian Shield 2 A) Baltica B) Rodinia C) Pangaea D) Laurentia 3 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078664233/184123/129_yrsago_noart.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (21.0K)</a>]]> A) Rodinia B) Pangaea C) Laurentia D) Gondwana 4 A) been rigid since the formation of Earth B) have the same specific gravity C) different densities D) the same densities 5 A) the same temperature as B) always 10 degrees less than C) cooler temperatures than D) hotter temperatures than 6 A) because of the principle of included fragments B) It is much less stable than the sandstone. C) because of the principle of superposition D) It is much more stable than the sandstone. 7 A) Laurentia B) North America C) Pangaea D) Rodinia 8 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078664233/184123/90_pcshld_gm_240p.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (40.0K)</a>]]> A) Alaska B) the Midwest C) the Southwest D) the Pacific Coast 9 A) feldspar B) iron and quartz C) feldspar, quartz, and mica D) iron- and magnesium-rich minerals 10 A) by seams called orogens B) by seams called faults C) by molten rock D) the erosion of mountains 11 A) Canadian shields B) continental crust C) Archean shields D) Precambrian shields
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