What type of evidence does cosmic background radiation provide about the origins of the universe?(1 point)
Responses
It pinpoints the size of the original universe.
It pinpoints the size of the original universe.
It supports predictions of the composition of the early universe.
It supports predictions of the composition of the early universe.
It verifies that the early universe was once extremely hot.
It verifies that the early universe was once extremely hot.
It proves that the universe is expanding.
It supports predictions of the composition of the early universe.
The correct response is:
- It supports predictions of the composition of the early universe.
- It verifies that the early universe was once extremely hot.
- It proves that the universe is expanding.
The correct answer is: It supports predictions of the composition of the early universe.
Cosmic background radiation, also known as the cosmic microwave background (CMB), is a form of electromagnetic radiation that is uniformly spread throughout the universe. It is considered as one of the strongest pieces of evidence for the Big Bang theory, which explains the origins of the universe.
The CMB provides information about the composition of the early universe. According to the Big Bang theory, the universe started with a hot and dense state and has been expanding and cooling ever since. As the universe expanded, the radiation that filled the early universe cooled down and stretched, resulting in the CMB. By studying the characteristics of the CMB, scientists can make predictions about the composition of the early universe, specifically about the presence of certain elements and the proportion of matter and energy.
Therefore, cosmic background radiation supports predictions of the composition of the early universe, providing evidence for the Big Bang theory and our understanding of the origins of the universe.