Teacher resources and professional development across the curriculum
Teacher professional development and classroom resources across the curriculum
Learner Express: Modules for Teaching and Learning
In a comparison of extreme drill holes to the diameter of the Earth, we see that even when reaching a depth of 14 km, geologists have barely scratched the Earth's surface. Geologists Andy Kurtz of Boston University, and Keith Klepeis of the University of Vermont, discuss temperature and pressure in the interior of the Earth and the obstacles that limit the depth to which we can drill. Run Time: 00:02:29
D. Structure of the Earth: Earth is layered and has a solid crust, hot, convecting mantle, and a dense metallic core.