Question

describing earths formation
order these events from oldest (1) to most recent (4).
dense melted material sank to form the core.
earths gravity captured gases to form the first atmosphere.
dust, rock, and ice were pulled together by gravity.
less dense material cooled, hardened, and formed the crust.

Explanation:

According to the process of Earth's formation, first, dust, rock, and ice were pulled together by gravity (this is the initial stage of Earth's accretion). Then, dense melted material sank to form the core (as the planet differentiated). After that, less - dense material cooled, hardened, and formed the crust (as the outer layer solidified). Finally, Earth's gravity captured gases to form the first atmosphere (once the planet had a stable structure to hold the gases).

Answer:

1. Dust, rock, and ice were pulled together by gravity.
2. Dense melted material sank to form the core.
3. Less dense material cooled, hardened, and formed the crust.
4. Earth's gravity captured gases to form the first atmosphere.