Week 1 Notes
Week 1 Notes BIOL 110 001
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This 3 page Class Notes was uploaded by Angelina Notetaker on Sunday August 23, 2015. The Class Notes belongs to BIOL 110 001 at University of New Mexico taught by Thomas L. Kennedy in Summer 2015. Since its upload, it has received 28 views. For similar materials see Biology Non-Majors in Biology at University of New Mexico.
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Date Created: 08/23/15
Biol 110 Week 1 Class Notes 12 The Universe Began with a Bang Evidence for the Origins of the Universe 0 The Big Bang happened 137 billion years ago 0 The universe began small then grew bigger as time moved forward The Universe has a beginning and end 0 Light from distant galaxies is red shifted 0 The closer a star is the more blue shifted it is when the star is far away it is red shifted because of the movement of light Scientific Evidence for the Big Bang Furthest object observed 131 billion light years away 0 Microwave background radiation when you are trying to find a channel on a radio and you hear the static on the radio you are hearing the universe How many stars are in the Universe 0 Stars were the first to be put in the universe They are a ball of energy which can be used 0 There are more stars in the universe then there is sand on the Earth gt The Big Bang was the origin of all matter and energy in the universe 13 What is matter and Energy There re two elements that are the base of all elements which are 1 Hydrogen 1 Proton and 1 Electron 2 Helium 2 Protons 2 Neutrons and 2 Electrons gt 75 of hydrogen is in the universe and 24 of helium is in the universe Atoms are mostly empty space Energy 0 Kinetic Energy 0 The fast you are moving the more energy you will have just like light 0 Potential Energy 0 Energy that is stored work is the ability to do something and to do work you need energy The lst Law of thermodynamics There is four laws but we only need to know two 1 Energy is stored in the wood when making a fire you are taking potential energy and transferring it to kinetic energy 2 Energy can be transferred and transformed 3 But energy is not lost The 2nd Law of thermodynamics 0 Entropy is a measure of disorder every time we use energy some of it becomes less useful 14 The Origin of Elements 0 There are 92 elements but 91 happen in nature and only one that does not 0 Star sizes the larger the star the more elements it will make Fusion and the Formation of Elements inside stars 0 Supernova Explosion when a star becomes to big it explodes 0 Create and spread heavy metals and elements Every element over element 25 was created by an exploded star 0 We are all star dust 15 The Origin and age of the Earth Earth39s history began as nebula Our Solar System Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Earth is 46 billion years old Determining the Earth39s Age 0 Beta Minus Decay occurs when in a nucleus with too many protons or too many neutrons one of the protons or neutrons is transformed into the other 0 Isotopes are in every element 0 Radioactive Isotopes 0 Half life every Isotope has a set half life nothing is a quotwhimquot 00000000 0 Isotope elements will someday turn into other element The Principle of Uniformitarianism 16 A Brief Summary of Earth39s History The Hadeon Eon 4638 Billion Years Ago 13 0 Formation of the Moon The Archean Eon 3825 Billion Years Ago 33 O Origins of life 37 billion years ago 0 Stromatolites have been on the Earth for 3 12 billion years ago The Proterozoic Eon Rise of atmospheric oxygen 43 O Eukaryotes 1215 billion years ago 0 Endosymbictic origion of mitochondrion The Phanerozoic Eon 542 MYA Present Rise of multicellular life 12 O The Paleozoic Era the continents were in the south 0 First there was plants and forest 0 First land animals were arthropods 0 First Fish Diversified 0 Ancestor to all terrestrial vertebrates Tiktaalik 0 Terrestrial animals diversified 0 Ancestor of mammals Dimetrodon 0 Conifeis evolved plants that can live in dry climate O The end of Paleozoic Era 251 MYA 0 Where the volcano went off and covered most of the land The Mesozoic Era 251 655 MYA 0 Dinosaurs 0 Some Dinosaurs had feathers 0 Pterodactyl 0 Plesiosaur o Ichthyosaur 0 First mammals 225 million years ago 0 First Birds 125 MYA 0 Flowering Plants 125 MYA
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