What causes day and night? Why do we have seasons? Through easy-to-understand animations, as well as live-action video footage, these difficult concepts are easily explained. The rotation of Earth on its axis, and its revolution around the sun are the focus of this video. Colorful graphics vividly illustrate the movement of our planet throughout the course of a year. Important terminology includes: axis, tilt, rotation, revolution, orbit, season, solstice, and equinox.

Originally released by Visual Learning, 2006. Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015. Teacher's guide available under Additional info tag.

Earth and the Solar System (2:28); --Day and Night (1:16); -- Earth Revolving (1:16); -- Seasons (2:36); -- Solstices and Equinoxes (1:39); -- Summing Up (1:38); -- Video Assessment (1:36); -- Credits: Earth's Rotation and Revolution (0:42); -- Seasons- Gr. 3 Earth Cycles Lesson 3 (8:29);.