Help please 1. Which of the following histories are in the correct order of occu

Question

Help please

1. Which of the following histories are in the correct order of occurrence? (C)

A. The Big Bang, then the expansion starts, then stars make the first elements heavier than helium, then the Sun forms.

B. The Big Bang happens simultaneously with the start of the expansion of the universe, then stars make the first elements heavier than helium, then the Sun forms.

C. The Big Bang happens simultaneously with the start of the expansion of the universe, then the Sun and stars make the first elements heavier than helium.

D. The Big Bang, then the expansion starts, then the Sun and stars make the first elements heavier than helium.

2. The Big Bang produced no elements heavier than helium because it was never hot enough for helium to undergo fusion (A)

A. True

B. False

Explanation / Answer

1) A. The Big Bang, then the expansion starts, then stars make the first elements heavier than helium, then the Sun forms.

Note: First The Big Bang, then the expansion starts, then stars and galaxies make the first elements heavier than helium, then the Sun and earth forms.

2) A.True

Few minutes after the Big Bang, the expansion of the universe occured and cooled rapidly so that fusion was made difficult.

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