This powerpoint is a lesson on Earth's rotation, time zones, and revolution. For each topic there is a slide where the students can brainstorm ideas about both topics. It shows diagrams and has links to short clips to enhance the student's understanding. There are several slides that ask short answer questions and then will reveal the answer once the students have been given time to answer. There is a matching section also. Complete lesson for rotation and revolution. I will soon have similar PowerPoint presentations for phases of the moon, comparisons of other planets, stars, and other space objects.