eshapeesha's version from 2016-06-06 17:55


Question Answer
elements heavier than hydrogen ceated throughfusion, creating energy bc by adding nucleons the element stabilizes and releases excess energy
once an element is heavier that iron it cantbe a star bc mass and energy too great
heavy elements created whenstars condense into a supernova and heavy elements released
big bang to ocean timelinethe big bang was14 mill years ago, universe expanded and cooled creating atoms from subatomic particles at a high density creating galaxies and stars. young earth was homogenous and the sun stripped away its first atmosphere through fusion . gasses released by outgassing from inside earth and comets replace the atmosphere. water vapor in this atmosphere condensed into clouds bc temp began declining. when it became cool enough the water vapor could rain down without evaporating and it accumulated in basins and depressions which created earth's early oceans.
when did the solar system condense5 bill yrs ago
how did our solar system formthe solar nebula from which everything around us formed was struck by the shock wave of an expanding supernova remnant. this caused turbulence and the condensing mass to spun. the centrifugal force (causing it to spin faster and condense more and more) as well as the heavy atoms absorbed from the supernova resulted in the condensation of our solar system. the center of this ball of stuff was a protosun and the outside of it became the planets.
first planets form howthe first giant planets were those that congealed at a low temp.
how did the sun format first it was a protosun, then the temp rose so fusion could occur and hydrogen could turn to helium. this fusion sent a solar wind of radiation sweeping past inner planets, clearing them of excess particles.
nuclear fusion2 nuclei fuse into 1 larger nuclei (hydrogen to helium in the sun) this adds nucleons, stabilizing, causing excess energy to be released. this is what fuels stars