The Universe

Consider the drawings provided below. Drawings A and B each represent a different way of thinking about how regions of the universe change over time.

The dots in each drawing represent pieces of matter. 12. Which drawing, A or B, is a better representation of the universe we live in?

Explain your reasoning. 13. Consider the three drawings (C, D, and E) shown below. These drawings each represent a single region of the universe, but at different times during the history of the universe. Label: earliest or latest? Label: earliest or latest? a) Draw an arrow (for D2L submission, drag and modify the red arrow provided) below the drawings C, D, and E, so it points in the direction from earliest time in the universe's history to the latest time in the universe's history. left b) Label the boxes below C and E with "earliest" and "latest." Earliest at
end, latest at right end of the arrow. 14. In which drawing does the depicted region of the universe have:

a) the lowest density?

b) the lowest concentration of energy?

c) the lowest temperature?

Explain your reasoning for your answers in a)-c) above: