Figures 14.3 and 14.4 show the margins of tectonic plates, or the sections of crust that m...

Figures 14.3 and 14.4 show the margins of tectonic plates, or the sections of crust that make up the earth’s surface. The movements—and collisions—of these plates are responsible for many of the geological resources and events we see around us. Because these movements are so important, the map is reproduced here. Examine it to answer the following questions:

What kind of plate movement is going on at the double blue line that runs through the middle of the Atlantic and through Iceland? Why does Iceland have abundant geothermal energy?