Space & Astronomy

Origins of the Universe Quiz

A set of ten multiple‑choice items exploring key concepts about how the universe started and evolved.

#astrophysics#dark matter#cosmology#cosmos#big bang#cosmic microwave background#inflation#early universe#galaxy evolution#stellar formation

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Total Questions

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Quiz Questions

Answer all questions below and test your knowledge.

1
Which observation provides the strongest evidence for the universe's expansion?
Question 1
2
What event is thought to have occurred approximately 10⁻⁵ seconds after the Big Bang?
Question 2
3
The cosmic microwave background has a temperature of about:
Question 3
4
Which particle decoupled from the primordial plasma first?
Question 4
5
The term "inflation" in cosmology refers to:
Question 5
6
What proportion of the total energy density of the universe is attributed to dark energy according to current measurements?
Question 6
7
Which element's primordial abundance is most sensitive to the baryon‑to‑photon ratio?
Question 7
8
The first stars that formed, known as Population III, were composed primarily of:
Question 8
9
Which of the following best describes the "horizon problem" solved by inflation?
Question 9
10
The term "recombination" refers to the epoch when:
Question 10

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Origins of the Universe Quiz

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Quiz Questions

Which observation provides the strongest evidence for the universe's expansion?

What event is thought to have occurred approximately 10⁻⁵ seconds after the Big Bang?

The cosmic microwave background has a temperature of about:

Which particle decoupled from the primordial plasma first?

The term "inflation" in cosmology refers to:

What proportion of the total energy density of the universe is attributed to dark energy according to current measurements?

Which element's primordial abundance is most sensitive to the baryon‑to‑photon ratio?

The first stars that formed, known as Population III, were composed primarily of:

Which of the following best describes the "horizon problem" solved by inflation?

The term "recombination" refers to the epoch when:

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