26. PreEarth_06

26. PreEarth_06 - Universe? Background radiation 6) What...

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Pre-Earth History Objectives 1) How old do geologists believe the Earth is, and how old do cosmologists believe the Universe is? Earth – 4.56 Billion years old Universe – 13.7 Billion years old 2) Using the “geoyear” analogy, how old is the Earth and the Universe? Earth, 1 Geoyear = 4.56 Billion years Universe, 3 Geoyears 3) Who was the first individual to scientifically attempt to date the age of the Universe? Edwin Hubble 4) What are the two mechanisms by which a red-shift of light from a distant object can take place? Source moving away from us Losing energy in the gravity well 5) What physical characteristics does the Big Bang hypothesis predict for the
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Unformatted text preview: Universe? Background radiation 6) What are the four fundamental forces in the Universe and which is weakest?-Gravitational (weakest)-Strong Nuclear-Weak Nuclear-Electromagnetic 7) How do elements with up to 26 protons in the nucleus get created, and how do elements with more than 26 protons in the nucleus get created?-Up to 26 protons fusion within a star-More than 26 protons nova and supernova explosions 8) When in the geoyear history do the first stars and novas appear? January 16th...
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26. PreEarth_06 - Universe? Background radiation 6) What...

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