Origin and expansion of the universe lab report introduction scientists have established a timeline of events after the big bang, based on astronomical observations and our understanding of the physical laws of the universe, such as gravity and the speed of light. in this lab activity, you will gather evidence to support the big bang theory. problem: how can models demonstrate theories of our expanding universe? hypothesis: i think that the more air that the balloons get the more points there will be materials: watch the virtual lab demonstration video within the lesson. no additional materials are needed. procedures: watch the virtual lab demonstration video within the lesson and record your observations in table 1. using your expanding universe data from table 1, construct a line graph using the volume of the below on the x axis and the distance between points on the y axis. be sure to include units and add titles to the graphs. refer to the graph example and graphing tutorial in the lesson if needed. complete the questions and conclusion section of the lab report. variables: for this investigation, list the independent, dependent, and controlled variables. data and observations: table 1: expanding universe observations galaxies distance: uninflated balloon (centimeters) distance: ¼ full (centimeters) distance: ½ full (centimeters) distance: ¾ full (centimeters) a to b 3.5 5 9 13 a to c 4 4 9 13.5 a to d 3.5 5.5 12 17.5 b to c 4 4 8.5 13 b to d 2 2.5 5 7.5 c to d 3 3.5 5.5 10.5 using your expanding universe data from table 1, construct a line graph using the volume of the below on the x axis and the distance between points on the y axis. be sure to include units and add titles to the graphs. refer to the graph example and graphing tutorial in the lesson if needed. place your graph here. questions and conclusion how does the density and distribution of your “stars” change as the balloon expands? as the balloon expands it an example how the universe is expanding and the stars ar moving away how does your expanding balloon model represent an expanding universe? by showing how galaxies are moving faster than we could dream what are some shortcomings of using this model as a replica of universe expansion? how does the model you created to show that the steady state theory is inaccurate? suggest a way that a scientist could create an even more accurate model of universe expansion. what will happen to the gravitational force between stars as the universe continues to expand? in conclusion, how did your prediction of distances between points compare to your experimental results?