405 test - 405 test 01:32 What Science Explores and what it...

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Unformatted text preview: 405 test 01:32 What Science Explores and what it cannot tell us Explores hypotheses to formulate theories about life NOT o Solution to all problems o Ignorant of rules o The road to the truth o Out to prove anything o 100% certain o final o infallible o unbiased o used properly Basic Requirements of Life homeostasis energy acquisition and conservation self organization replication adaption organic composition mutation inheritance Physical Constraints on Life and Time Absolute zero= 0 K Speed of light o c= 3 x 10^8 ms^-1 gravitational constant o G= 6.673 x 10-11 m^3kg^-1s^-2 Planck Length o 1.616252 x 10^-35m Planck Time o 10^-43 sec Origin of the Universe Before Big Bang o No previous era- Began abruptly o Quantum Emergence- develop from primeval state o Multiverse- bud off from eternal space o Cyclic Universe- cycle of expansion collapse expansion Origin and Early History of the Earth 13.7 bya- The Big Bang 5 bya- Solar System forms 4.7 bya to 4.5bya- Earth Forms 3.5 bya- Earliest Fossils Origin of the Solar System Hot Origin o 1749- George-Louis Leclerc o comet collision with sun Planetesimal o Form from dust that collides and sticks o 1905- Thomas Chamberlain and Forest Ray Moulton Nebular Hypothesis o 1944- Carl Friederich von Weizsacker o 1951- Gerard Kuiper o stars form in dense H clouds, collapse together Panspermia Hypothesis amino acids form spontaneously under right conditions seeds from space Heterotrophic v. Autotrophic Hetro- consume for energy Auto- produce own energy Origins of Life Need o Amino acids (backbone of proteins) o...
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405 test - 405 test 01:32 What Science Explores and what it...

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