Earth: From Birth to Death FINAL REVIEW SHEET -- 4.0ed the final exam!

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Geography & Development
GEOG 170A1
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Final Review Sheet Earth BirthThe Earth is 45 billion years old Gasdust pulled together by gravityrotating disk Starplanets form at the same time Universe is MUCH older 14 billion years old Which of the following best describes the age relationships between the universe the Earth and humans The Earth is really old compared to humans and really young compared to the universe Galaxies appear red shifted This tells us they are moving away from us What would a star or galaxy look like if it were moving toward you it would be blue shifted Birth of Universe and Earth Universe is about 14 billion years old Earth is younger45 billion years old Earth formed from a rotating disk of gas and dust as did our entire solar system Universe is expandingred shift of galaxiesExpansion is speeding upfarther galaxies move faster awayFour Components of the Earth system Atmo
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