Geography: rotation, orbit and summer solstice (mobile lab)

We will watch the following videos in mobile lab to extend our knowledge on rotation, orbit and the changing seasons.

earth rotation

http://www.youtube.com/watch?v=pLl8sDZRSYg&feature=related
earth orbit

http://www.youtube.com/watch?v=vDgUmTq4a2Q&feature=related
summer solstice

http://www.youtube.com/watch?v=dmPXOusmzrw