The Big Bang Theory and The Steady State Theory both try to explain how the universe began (or existed). Below are 3 pieces of evidence. Match the piece of evidence to the theory that it supports.

Question

scientists have not found objects older than 14 billion years.
Cosmic radiation levels were predicted by this theory before they were detected.
Galaxies are moving outward from a central point.

Answer 1

Here’s how the pieces of evidence can be matched to the theories they support:

1. Scientists have not found objects older than 14 billion years.
   Supports: The Big Bang Theory.
   This piece of evidence suggests a finite age of the universe, consistent with the Big Bang model which posits that the universe began at a specific point in time.

2. Cosmic radiation levels were predicted by this theory before they were detected.
   Supports: The Big Bang Theory.
   The prediction of cosmic microwave background radiation was a key aspect of the Big Bang Theory and was confirmed by observations.

3. Galaxies are moving outward from a central point.
   Supports: The Big Bang Theory.
   This observation, known as the redshift of galaxies, indicates that the universe is expanding, which aligns with the predictions of the Big Bang Theory.

The Steady State Theory, by contrast, posits that the universe does not change over time and does not predict the same evidence as the Big Bang Theory.