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Size, Motion, Distance - Appearances Can Be Deceiving

Journal Entry - Take out your science journal and answer the following question(s) (use drawings as appropriate):

Are all the stars in a constellation the same distance from the earth?

Materials:

  • Four to eight stars that are 3 or 4 inches wide
  • String
  • Tape (or another method to secure stars to ceiling)

Procedure:

  1. Attach stars to string and hang from ceiling within a 2 foot by 2 foot area. Do not hang them in a straight row.
  2. Have students observe the stars from close range.
  3. Move about 50 feet away and observe stars again.
  4. How did the distance of the individual stars appear to change?

Conclusion:

From this, what can you conclude about the distances of individual stars in a constellation?

Extension:

Make a T-graph comparing and contrasting the stars in a constellation.

        

utah state board of education This Sci-ber Text was developed by the Utah State Board of Education and Utah educators.