Question

Order these events from oldest (1) to most recent (4). Dense melted material sank to form the core. Earth’s 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.

Answer 1

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.

Answer 2

The order these events from oldest to most recent is:

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.

• There is a variety of indirect evidence for this evolution, despite the complexity of the process by which the current atmosphere changed from earlier conditions.
• The atmospheric composition has changed in the past as a result of chemical reactions with the Earth's crust and, in particular, with biological processes related to life, according to ancient sediments and rocks.
• The initial atmosphere of Earth was deficient in free oxygen but abundant in methane, ammonia, water vapour, and the noble gas neon.
• The first biological generation of oxygen by unicellular organisms and its eventual accumulation in the atmosphere most likely occurred hundreds of millions of years apart.
• A considerable lot of information about the atmosphere's origin is encoded in its makeup.
• A further indication of the significant interconnections between the atmosphere, terrestrial environment, and biota is the nature and variability of the minor components.

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