Which statement is incorrect about cosmic microwave background radiation?
1- it’s temperature is uniform
2- it consist of electromagnetic radiation that is a remnant of the Big Bang
3- it appears uniformly across the universe
4- it is evidence for the little bang theory
The incorrect statement is: 4- it is evidence for the little bang theory.
The incorrect statement about cosmic microwave background radiation is number 4. Cosmic microwave background radiation is not evidence for the "little bang theory."
The incorrect statement about cosmic microwave background radiation is option 4: "it is evidence for the little bang theory." The other three statements are correct.
To understand why option 4 is incorrect, we need to clarify what the term "little bang theory" refers to. The correct scientific term is actually the "inflationary theory" or cosmic inflation. It suggests that the universe expanded rapidly for a brief period just after the Big Bang.
Cosmic microwave background radiation, on the other hand, is a crucial piece of evidence that supports the Big Bang theory, not the little bang theory. It is electromagnetic radiation that is uniformly distributed throughout the universe and has a nearly uniform temperature of about 2.7 Kelvin (-270.45 degrees Celsius or -454.81 degrees Fahrenheit). This radiation is considered a remnant of the early universe, specifically from a time approximately 380,000 years after the Big Bang, when the universe became transparent.
Scientists have studied this radiation extensively and have found that it appears uniformly across the universe, with only small variations that provide valuable insights into the structure and evolution of the cosmos.
It's important to stay updated on scientific concepts and terminologies as they evolve, as this helps to ensure the accuracy of information.