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 warmed over time.
The temperature of the universe has cooled and warmed repeatedly over time.
The temperature of the universe has cooled and warmed repeatedly over time.
The temperature of the universe has cooled over time.
The temperature of the universe has cooled 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 temperature of the universe has cooled over time.
The correct answer is: The temperature of the universe has cooled over time.
Explanation:
One of the pieces of evidence that supports the Big Bang Theory is the expansion of the universe, which implies that the universe has been expanding and cooling over time. As the universe expands, the energy and radiation within it become more spread out, leading to a decrease in temperature. This is known as "cosmic microwave background radiation," which is a remnant of the early, hot stages of the universe, and helps to support the idea that the universe was once in a hot and dense state during the Big Bang.