Which is evidence of universe expansion that supports the Big Bang Theory?(1 point)
Responses
The temperature of the universe has warmed over time.
The temperature of the universe has cooled and warmed repeatedly over time.
The temperature of the universe is the same as it was at the time of the Big Bang.
The temperature of the universe has cooled over time
The correct response is: The temperature of the universe has cooled over time. This evidence supports the Big Bang Theory because it suggests that the universe was hotter and more densely packed in the past, and has been expanding and cooling since then.
To determine which option is evidence of the universe expansion that supports the Big Bang Theory, we need to understand the concept of cosmic microwave background radiation.
According to the Big Bang Theory, the universe originated from a hot and dense state and has been expanding ever since. As the universe expanded, it cooled down, resulting in the radiation left over from the early stages of the universe's formation, known as cosmic microwave background radiation (CMBR).
With this understanding, we can now evaluate each option:
1. "The temperature of the universe has warmed over time": This option suggests that the temperature of the universe has increased as it expanded. However, this contradicts the concept of cooling as a result of expansion, which is a fundamental aspect of the Big Bang Theory. Therefore, this option is not evidence of universe expansion that supports the Big Bang Theory.
2. "The temperature of the universe has cooled and warmed repeatedly over time": This option suggests cyclical temperature changes in the universe, which is not consistent with the gradual cooling predicted by the Big Bang Theory. Therefore, this option is also not evidence of universe expansion that supports the Big Bang Theory.
3. "The temperature of the universe is the same as it was at the time of the Big Bang": This option contradicts our understanding of the universe's cooling over time due to expansion. Therefore, this option is not evidence of universe expansion that supports the Big Bang Theory.
4. "The temperature of the universe has cooled over time": This option aligns with the concept of the universe gradually cooling as a result of its expansion, which is a fundamental element of the Big Bang Theory. Cooler temperatures indicate an expansion that matches our understanding of the universe's evolution. Therefore, this option is evidence of universe expansion that supports the Big Bang Theory.
Hence, the option "The temperature of the universe has cooled over time" is evidence of universe expansion that supports the Big Bang Theory.
The evidence of universe expansion that supports the Big Bang Theory and indicates cooling over time is:
- The temperature of the universe has cooled over time.