Examines the Earth's composition and forces. Includes segments on how heat from the Earth's interior helps to shape its surface; the differences between continental and ocean crust; how plate tectonics change the Earth's crust and collide to form volcanoes; how earthquakes and mountains are created as a result of tectonic activity.

Teacher's guide available under additional info tag.

Chapter's include: -- The Earth's interior and crust (4 min.) -- The Earth's crust (4 min.) -- Plate tectonics (4 min.) -- Volcanoes (6 min.) -- Earthquakes (3 min.) -- Mountains (5 min.).