Question

checkpoint 1.2
earth science a (is704f) #97471 / week 3 / lesson 6b: checkpoint 1.2

1. what is the \first second\ in relation to the big bang theory?

the beginning of the sun

the moment the planets began their orbits around the sun

the formation of the milky way galaxy

the beginning of the universe

Explanation:

The Big Bang theory describes the origin of the universe. The "first second" after the Big Bang marks the very beginning of the universe's existence, with rapid expansion and particle formation. The other options (sun's beginning, planets' orbits, Milky Way formation) occurred much later in cosmic history.

Answer:

D. the beginning of the universe