The following graph, based on the data gathered by Hubble, shows the relationship between the recessional velocity of galaxies and their distance from Earth.
- Describe the significance of the graph to our understanding of the universe. (2 marks)
--- 4 WORK AREA LINES (style=lined) ---
- How were the recessional velocities of galaxies determined? (3 marks)
--- 6 WORK AREA LINES (style=lined) ---