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the most widely accepted theory for the formation of the universe which states:
1) All matter was once ocmpacted into tiny dense particles by extreme pressure
2) Extreme pressure and temperature created an explostion.
3) Matter and energy was propelled outward in all directions forming the expanding universe.
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| very large groups of stars and associated matter formed when matter from the Big Bang cooled |
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| light given off from galaxies in motion that is shifted toward the red end of the spectrum and that galaxies are moving away from Earth in all directions; used to support the Big Bang Theory |
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| Cosmic background radiation |
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| heat radiation coming from all directions of space which is believed to be the remains of the thermal energy from the intial explosion of the Big Bang |
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| an alternative theory to the Big Bang which states that as the universe expands new matter is formed |
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| the sun and all of the objects that orbit around the sun |
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| a large cloud of dust in space that occupies a region where a star began or ended |
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| a force of attraction that all objects exert upon one another |
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| single celled organism found in fossils from early Earth that are photosynthetic; believed to be responsible for converting early Earth's atmosphere from carbon dioxide to oxygen through the process of photosynthesis |
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| layer of Earth beneath the lithosphere and above the outer core |
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| outer solid layer of Earth |
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| central, inner layer of Earth |
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| gaseous part of the Earth |
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| portion of the earth that is water |
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| portion of the earth that is solid |
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| plastic-like layer of the upper mantle which can flow like hot wax |
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| living organisms of the earth |
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| an impression, remnant, or trace of an organism that has been preserved in the crust of the Earth |
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| theory that the Earth's lithosphere is divided into plates that glide over the weak Asthenosphere |
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| pieces of the lithosphere |
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| pieces of the lithosphere |
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