Question

1
multiple choice 2 points
according to the big bang theory, which graph best represents the relationship
between time and the size of the universe from the beginning of the universe to the
present?
2
13
14
15

Explanation:

Step1: Understand the Big Bang theory

The Big Bang theory states that the universe started from a very small, dense state and has been expanding ever since. So, as time increases from the beginning to the present, the size of the universe should be increasing.

Step2: Analyze each graph

• The first graph shows an increasing trend of size with time, which is consistent with the universe expanding over time as per the Big Bang theory.
• The second graph has a constant size with time. This is not in line with the Big Bang theory as the universe is not static in size.
• The third graph shows a decreasing size with time. This is contrary to the Big Bang theory which predicts expansion.
• The fourth graph shows a size that first increases and then decreases. There is no scientific basis in the Big Bang theory for the universe to start shrinking after an initial expansion (at least not in the context of the basic Big Bang model for the time period from the beginning to the present as considered here).

Answer:

The first graph (the one with an increasing trend of size with time) best represents the relationship between time and the size of the universe from the beginning of the universe to the present according to the Big Bang theory.