Big Bang Theory — MCQs

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1. The Big Bang Theory explains:





2. Approximately how old is the universe according to the Big Bang Theory?





3. Who first proposed the idea of an expanding universe that later became part of the Big Bang Theory?





4. What observation by Edwin Hubble supported the Big Bang Theory?





5. Which radiation is considered strong evidence for the Big Bang?





6. The Big Bang Theory suggests the universe began as:





7. Which elements were primarily formed in the first few minutes after the Big Bang?





8. The “redshift” observed in galaxies is explained as:





9. Who discovered the Cosmic Microwave Background Radiation in 1965?





10. The Big Bang Theory is best supported by which three main pieces of evidence?





11. The steady-state theory was a rival to the Big Bang Theory and proposed:





12. The “cosmological principle” assumes that the universe is:





13. The inflationary model of the Big Bang suggests:





14. The Big Bang nucleosynthesis occurred during the first:





15. Which scientist is closely associated with the mathematical model of the expanding universe?





16. The universe’s expansion is currently:





17. What mysterious force is thought to be responsible for the accelerating expansion of the universe?





18. According to the Big Bang, the early universe was primarily composed of:





19. The term “Big Bang” was originally coined by:





20. Why did Fred Hoyle use the term “Big Bang”?





21. What does the Cosmic Microwave Background (CMB) represent?





22. Which technology helped map the CMB with high precision?





23. The CMB has a temperature of approximately:





24. The shape of the universe according to current observations is:





25. What is the fate of the universe if dark energy continues to dominate?





26. Which particle was abundant in the early universe?





27. The discovery of cosmic expansion led Einstein to:





28. Which law supports the idea that galaxies are moving away from each other?





29. Hubble’s Law states that:





30. The Big Bang Theory does NOT explain:





31. Which era came immediately after the Big Bang?





32. The first stars formed approximately:





33. The Big Bang Theory supports the universe having a:





34. Which physicist contributed to the singularity theorem related to the Big Bang?





35. What does the term “cosmic horizon” mean?





36. Which principle explains that physical laws are the same everywhere in the universe?





37. The Big Bang was not an explosion in space but rather:





38. Which theory suggests the universe may end in repeated cycles of expansion and contraction?





39. The cosmic redshift was first measured using:





40. Which scientist’s equations form the mathematical basis for the Big Bang?





41. The Big Bang Theory implies the universe has a:





42. Dark matter is important in cosmology because it:





43. What percentage of the universe is made up of dark energy?





44. What percentage of the universe is ordinary matter?





45. Which observation technique detects the CMB?





46. Which cosmic event created heavier elements like carbon and oxygen?





47. The observable universe extends approximately:





48. The “heat death” scenario of the universe implies:





49. Which scientist popularized the Big Bang Theory through works like A Brief History of Time?





50. The Big Bang Theory is considered the most accepted model because:





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