Put the six events or processes in the correct sequence by writing their Roman numerals in the correct order in the numbered blanks below.
i. Volcanic eruptions release carbon dioxide into the atmosphere.
ii. Early organisms release oxygen into the air.
iii. Oceans form on Earth’s surface..
iv. Hydrogen and helium are captured by gravity to form an atmosphere.
v. A dense, iron core form at Earth's center
vi. Earth is a ball of dust, rock, and ice in space.
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VI. Earth is ball of dust, rock, and ice in space
That would have been very early in the solar system formation. Likely our solar system was created when a nebula began collapsing to form a solar nebula. As it collapsed, it began to spin and flatten out. That flattening process caused clumping of dust, rock, ice, and gas. Once the chucks reach a certain size, they are called planetesimals. Those continue to add together until reaching the size of about 350 km in diameter. At that point, gravity and pressure cause the odd shaped ball to round out nicely into a sphere shape.
V. A dense, iron core forms at Earth's center
This happens because iron is denser than all of the other materials present, so it sinks down lower while the lighter solids "float" up on top of the iron core
IV. Hydrogen and helium are captured by gravity to form an atmosphere
I. Volcanic eruptions release carbon dioxide into the atmosphere
III. Oceans form on Earth's surface.
The source of that water is probably a combination of outgassing from volcanoes and deposition from meteors and comets.
II. Early organisms release oxygen into the air.
The process by which they do this is called photosynthesis. They use the raw energy from the sun and use it to power a chemical reaction that converts carbon dioxide and water into oxygen and glucose.
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