2. How long is one rotation of Earth? How long is one revolution of Earth?

3. Rising and Setting of the Sun Rising and Setting of the Moon The Seasons Changing Constellations Movement of Stars through the sky

4. One rotation = 360° Time for one rotation = 24 hours 360° ÷ 24 = 15°/hr

5. How many degrees did the stars move from diagram 1 to diagram 2? 30° (2 hours x 15°)

6. How can you find Polaris? It’s the only one that didn’t move

7. What hemisphere must you be in? Why? Northern Because Polaris can only been seen in the North

8. What direction must you be looking? North

9. What direction do the stars appear to move?

10. What causes the stars appear to move?

11. http://www.youtube.com/watch?v=nB2SXLYwKkM

13. Motions of the earth and the seasons http://esminfo.prenhall.com/science/geoani mations/animations/01_EarthSun_E2.htmlhttp://esminfo.prenhall.com/science/geoani mations/animations/01_EarthSun_E2.html

15. Facts to remember about the seasons Most important factor controlling seasons is the tilt of the earth. Important dates that YOU MUST KNOW June 21  Summer solstice Sept. 21  Fall equinix Dec. 21  Winter solstice March 21  Spring equinox