Answer the following questions on a separate sheet of paper.

1. Did the North Star's (Polaris') position change over the course of your observation? Explain.

2. Did the Big Dipper's position change over the course of your observation? Explain.

3. Examine the following time lapse photograph. Each arc represents an object such as a star. Explain what kind of motion occurs to produce such a photo (the camera is held still relative to the earth.)

4. In the photo above, approximately what fraction of a circle is each arc? How long do you think the exposure was to take this photo? Why?

5. This photo was taken in the southern hemisphere and the objects are moving clockwise. In what direction would the objects move if a similar photo were taken in the northern hemisphere? What object would be at the center of the arcs in the northern hemisphere? Do your observations of Polaris and the Big Dipper agree with these conclusions?