Which provides evidence of universe expansion that supports the Big Bang Theory? Select the three correct answers.
Responses
The universe is undergoing a cycle of contraction and expansion.
The universe is undergoing a cycle of contraction and expansion.
An enormous amount of weak cosmic background radiation has been detected in the universe.
An enormous amount of weak cosmic background radiation has been detected in the universe.
The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.
The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.
The temperature of the universe is decreasing.
The temperature of the universe is decreasing.
Galaxies are moving away from each other.
The three correct answers that provide evidence of universe expansion supporting the Big Bang Theory are:
1. An enormous amount of weak cosmic background radiation has been detected in the universe. This is known as the Cosmic Microwave Background (CMB) radiation, which is considered to be a residual heat signature from the early stages of the Big Bang. The detection and uniformity of this radiation strongly support the idea of an initial explosion and subsequent expansion.
2. The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another. The slight variations in temperature across the CMB provide additional evidence for the Big Bang Theory. These temperature fluctuations indicate regions of slightly denser and less dense matter in the early universe, which eventually led to the formation of galaxies and large-scale structures.
3. Galaxies are moving away from each other. Observations of distant galaxies show that they are moving away from us, and this effect is observed regardless of the specific direction we look in the universe. This phenomenon, known as the Hubble expansion, indicates that the universe is expanding and supports the Big Bang Theory, which suggests that all matter and energy originated from a single point and has been expanding ever since.
To arrive at these answers, one could use various scientific sources such as textbooks, research papers, or reputable websites related to astrophysics or cosmology. The evidence for universe expansion and the Big Bang Theory comes from extensive observations, data analysis, and theoretical understanding, which have been validated by the scientific community over many years.