Wednesday, June 2, 2010

Cylce 2_Week 9


Reflecting on class today, I remember overall learning that the rotation of the Earth affects the shadows of objects. For example when we first went outside Ms.Douglas drew an outline around the shadow of a car in the parking lot. When we came back at the end of the period, the shadow had moved to the right. The purpose of a sundial is to tell time. A sundial works by the sun shining down on the gnomon(the triangular peice on the sundial) and the gnomon's shadow falls upon the hour line. What I learned in class today is the rotation of the Earth affects where an object's shadow lies. Since the Earth is always moving the Sun's rays are always hitting different places, which means the shadow's are going to be different places too.
Link:www.psdtop.com/blog/photo-effects/day-and-night/



1 comment:

  1. good job i see that you have a piture in your blogging so you have showed that u was being very detail

    ReplyDelete