The Sun-Earth-Moon System 11 Name Date Class Earth's Spin The speed at which Earth turns on its axis can be described in two ways. The velocity of rota-tion refers to the rate at which Earth turns on its axis. Velocity of rotation refers to Earth as a whole. For any point on Earth's surface, the speed of Earth's rotation can be described Journey to the Center of the Earth by Stacia Lawhornpace 1 $3.50 PDF Students create a journey of their own through the center of the Earth and answer questions that relate to Volcanoes, earthquakes, and tectonic plates. There are 9 expeditions for students to follow. This is a google form multiple choice worksheet that helps guide students through the video that it's associated with. There are 21 Questions at 10 points each giving you a total of 210 points great for an introduction to the origin of elements in Chemistry class or Planetary/ Earth Science courses. Subjects: Astronomy, Chemistry, Physical Science