how does the proportion of hydrogens and helium in the universe support the big bang theory?
a. it shows that only simple elements are present in the universe
b. it is the proportion predicted to be present in the early universe
c. it proves that matter must be formed under high temperatures
d. it demonstrates the rate of expansion predicted by the theory
b. It is the proportion predicted to be present in the early universe.
The Big Bang Theory explains that the universe began with a highly dense and hot state, and as it expanded and cooled down, the simple elements like hydrogen and helium were formed. The proportion of hydrogen to helium observed in the universe today matches the predicted proportions that would result from the Big Bang. This alignment of observed proportions with predicted proportions provides evidence in support of the Big Bang Theory.
The correct answer is b. it is the proportion predicted to be present in the early universe.
The proportion of hydrogen and helium in the universe supports the Big Bang theory because it matches the predicted composition of elements in the early universe. According to the theory, the universe originated from a hot, dense state, and as it expanded and cooled down, nuclear reactions occurred, primarily converting hydrogen into helium. This process is known as nucleosynthesis.
Based on the principles of nuclear physics and the conditions of the early universe, scientists have calculated the expected proportions of hydrogen and helium that would result from this nucleosynthesis. Through observations and measurements, it has been found that the actual proportion of hydrogen and helium in the universe is consistent with these predictions.
This agreement between the predicted and observed proportions of hydrogen and helium provides strong evidence in support of the Big Bang theory and its explanation for the early stages of the universe's formation.
The correct answer is b. it is the proportion predicted to be present in the early universe.
To understand how the proportion of hydrogens and helium in the universe supports the Big Bang theory, we need to look at the context of the Big Bang theory itself.
The Big Bang theory suggests that the universe began with a massive explosion around 13.8 billion years ago. According to this theory, the universe was initially extremely hot and dense, and it has been expanding and cooling ever since. During this initial hot and dense phase, nuclear fusion reactions occurred, leading to the production of light elements like hydrogen and helium.
Now, let's focus on why the proportion of hydrogens and helium in the universe supports the Big Bang theory.
In the early stages of the universe, it was primarily composed of extremely high energy photons and subatomic particles. As the universe expanded and cooled down, the temperature dropped to a point where the atomic nuclei, mainly protons and neutrons, could combine to form helium through nuclear fusion reactions. Due to the extreme conditions during this phase, very little time was available for these nuclei to combine into heavier elements.
Calculations based on the Big Bang theory predict that approximately 75% of the baryonic matter in the universe should be hydrogen, while around 25% should be helium. Observations have confirmed this prediction, which matches the proportions we observe in the universe today.
This correlation between the predicted and observed proportions of hydrogen and helium provides strong evidence in favor of the Big Bang theory. It indicates that the universe has indeed experienced this early phase of extreme temperature and high-energy reactions, leading to the observed distribution of light elements in the universe today.
To summarize, the proportion of hydrogens and helium in the universe aligns with the predictions of the Big Bang theory, supporting the idea that the universe began with a hot, dense, and rapidly expanding state.