Judith I. Vandel, McCormick Junior High, Cheyenne, WY THE BIG BANG THEORY Appropriate for grades 8-9. OVERVIEW: The Big Bang Theory of the possible origin of the universe is very difficult for students to understand. This particular activity was designed to show students that taking a given mass of material and applying a force to it can produce a pattern that replicates the material patterns noted when applying the Big Bang Theory. OBJECTIVES: Students will be able to: 1. Explain how the Big Bang Theory can be used to explain the origin of the universe. 2. Demonstrate, using graphical analysis, how different masses react to the same force. 3. Describe the patterns observed when the force is applied. 4. Identify what material types could represent bodies of the universe. 5. Equate material colors or the visible spectrum as it relates to the elements found in celestial bodies. (Expansion exercise) ACTIVITIES: 1. Using masking tape, divide the room or the center of the room into four to six equal parts. Class and room size will help determine this. 2. Take a balloon and insert punch out pieces of construction paper that have the colors of the visible spectrum and white. Use 30 pieces of each color. 3. Have one student stand in the center and blow up the balloon. The expansion of the balloon should be the same for each class so that comparisons can be made between classes. Obviously, the expansion of the balloon corresponds to the energy with which the pieces will spread across the room. 4. Pop the expanded balloon with a pin. 5. Using groups of students, have each group the different colored pieces in a particular sectioned off area. 6. Graph the results, noting the number of each color represented in each area. 7. Analyze the results according to distribution of the colored pieces and how this distribution relates to the Big Bang Theory. 8. Make distribution comparisons for all classes. RESOURCES: Teacher Materials = balloons, colored paper punch outs, masking tape, pin, laboratory sheets with graph paper. Student Materials = pencil, straight edge, colored pencils. TYING IT ALL TOGETHER: It is almost impossible to believe that the variation in the weight of the different colors of construction paper can produce the patterns that continually show up in the different classes if the balloon is blown up to the same diameter in each class. The white pieces very often appear in the outermost areas, while the blue and read are nearer the point of origin. It becomes very evident to the students that the distribution of celestial bodies could be explained by the Big Bang Theory as demonstrated in this activity. It is also possible to expand this activity by using the knowledge of color and its relationship to the presence of different elements to help students determine what elements are represented in each separate area. This is an excellent way for students to become involved in accurate observation, graphing, and analysis of results.