Question

which event happened first in earths evolution on the geologic time scale?
energy from collisions melted materials that became earths core.
the sun released a strong burst that destroyed the first atmosphere.
a ball of dust, ice, and rock was pulled together by gravity.
dense materials hardened to form the crust and mantle.

Explanation:

The formation of Earth began with the gravitational pulling together of dust, ice, and rock. After that, energy from collisions melted materials (related to core formation), then dense materials hardened (crust and mantle), and finally, the Sun's burst (destroying the first atmosphere) occurred later in the sequence.

Answer:

A ball of dust, ice, and rock was pulled together by gravity.