Watch Rock 'N Learn: Earth Science (1970) : Full Movie Online Free Marko the Pencil and his friend Terra take learners on a fascinating journey to Marko's Super Science Station where it's easy and fun to understand science concepts and boost test scores. This science DVD covers the Solar System, weather and the water cycle, types of rocks, properties of minerals, volcanoes and plate tectonics, weathering, and alternative energy. Meets the National Science Education Standards.