How does the change in the temperature of the universe provide evidence for universe expansion that supports the Big Bang Theory?(1 point)
Responses
The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The correct response is: The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The correct answer is:
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The correct answer is: The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The change in the temperature of the universe provides evidence for universe expansion and supports the Big Bang Theory. According to the theory, the universe began with a hot, dense state and has been expanding ever since. As the universe expands, it cools down, resulting in a decrease in temperature.
To understand how this supports the Big Bang Theory, we need to look at the cosmic microwave background radiation (CMB). The CMB is the afterglow of the Big Bang and is made up of faint microwaves that permeate the entire universe. These microwaves were released when the universe became transparent to light about 380,000 years after the Big Bang.
The key evidence comes from studying the temperature of the CMB. Scientists have observed that the CMB has a nearly uniform temperature of about 2.7 Kelvin (-270.45 degrees Celsius) in all directions of the sky. However, when they measure the CMB at different points in time, they find that the temperature is slightly lower. This indicates that the universe has been expanding and cooling over time.
By measuring the current temperature of the CMB and comparing it to the predicted temperature based on the expansion of the universe, scientists can determine the amount of time that has passed since the Big Bang. This supports the idea that the universe started from a hot, dense state and has been expanding and cooling ever since.
In summary, the change in the temperature of the universe, specifically the cooling observed in the cosmic microwave background radiation, provides evidence for universe expansion and supports the Big Bang Theory.