The movie below illustrates what the moon looks like as it crosses the sky during a lunar eclipse. Run the movie several times to observe the motion, and answer the questions below the movie.

This movie is an object movie. To view it, click and drag on the moon.

East....................................................................................................................West

1. What is the apparent motion of the moon as view from the earth, West to East, or East to West?

2. What is the apparent motion of the earth's shadow with respect to the moon?

3. What is the apparent motion of the moon with respect to the earth's shadow?

4. Do you think that the earth's shadow moves across the moon, or does the moon move through the earth's shadow?