THE EARTH S ORBIT HAS CHANGED WE ARE GOING TO DIE!!! Grab a handout and begin silently working

Transcription

1 WORLD GEO 2/22/2017 TODAY S Rotation/ Revolution/ & Tilt NO BOOK NEEDED TODAY SORRY WELCOME TO THE THE EARTH S ORBIT HAS CHANGED WE ARE GOING TO DIE!!! Grab a handout and begin silently working AFTERWARDS Discuss/ If time allows begin studying the WORLD MAPS/ ANTHROPIC PRINCPAL/ PLANETS! IN YOUR TEXTBOOK PAGES A1-A16 Visit our website for more info/ map resources! Created 9/10/18 by S BOOTHBY

2 LINK TO TODAY S VIDEO: The Twilight Zone S03E10 The Midnight Sun MRS BRONSON: ACTRESS Betty Garde AWARD: Worst Dramatic Death Scene EVER! In a TV Series Katharine Elizabeth "Betty" Garde (September 19, 1905 December 25, 1989) was an American stage ONE OF THE WORST ACTRESSES EVER KNOWN TO MAN! Voted 2017 s Worst Actress EVER by World WHS! Sorry you re dead but that REALLY DID SUCK!

3 ON THE BACK OF YOUR PAPER Make a Planet(s) Mnemonic! MY VERY EDUCATED MOTHER JUST SENT US NINE PIZZAS! MY VERY EVIL MOTHER JUST SENT US NASTY PIZZAS! Most Violent Evil Men Just Slap Underweight Nice People KEEP THESE CLEAN! WARNING Most Very Excited Mexicans My Virginity Eventually Many Virgins Evaded Michael Jackson s Serpent Under Neverland Palace!

4 If time allows discuss The Anthropic Principle It appears that there is a set fundamental physical constants that are such that had they been very slightly different, the universe have been void intelligent life. It's as if we're balancing on a knife s edge. Some philosophers and physicists take the 'fine-tuning' these constants to be an explanandum that cries out for an explanation, but is this the right way to think? Does it scare you or make you feel special that just being here today makes you a living miracle? Anthropic Constant 1: Oxygen Level On earth, oxygen comprises 21 percent the atmosphere. That precise figure is an Anthropic Constant that makes life on earth possible. If oxygen were 25% fires erupt spontaneously, if it were 15%, human beings suffocate. Anthropic Constant 2: Atmospheric Transparency If the atmosphere were less transparent, not enough solar radiation reach the earth s surface. If it were more transparent we be bombarded with far roo much solar radiation down here. (In addition to atmospheric transparency, the atmospheric composition precise levels nitrogen, oxygen, carbon dioxide and ozone are in themselves Anthropic constants). Anthropic Constant 3: Moon-Earth Gravitational Interaction If the interaction were greater than it currently is, tidal effects on the oceans, atmosphere, and rotational period be too severe. If it were less, orbital changes cause climatic instabilities. In either event, life on earth be impossible.

5 Anthropic Constant 4: Carbon Dioxide level If the CO2 level were higher than it is now, a runaway greenhouse effect develop (we d all burn Water. up). If Earth the level has an were abundance lower than water, it is now, which plants is essential not for be life. able Mars to maintain once had efficient water and photosynthesis therefore might (we d have all suffocate). harbored life. But water is only one many requirements for life. Oxygen. Earth is the only planet in our solar system in which we can breathe. Attempting to breathe on other planets, such as Anthropic Mars or Venus, Constant 5: be Gravity instantly fatal, Mars having virtually If the gravitational no atmosphere force and were Venus altered having by mostly carbon dioxide and almost no oxygen. percent, our sun not exist, and, therefore neither we. Talk about precision. Earth s distance from the Sun. If the Earth were merely one percent closer to the Sun, the oceans vaporize, preventing the existence life. On the other hand, if our planet were Anthropic Constant 6: Centrifugal Force If the just centrifugal two percent force farther planetary from the movements Sun, the oceans did not precisely freeze balance and the the rain gravitational that enables forces, life nothing could be held in orbit around the sun. be nonexistent. Plate tectonic activity on Earth. Scientists have determined that if the plate tectonic activity were greater, human life could not be sustained and greenhouse-gas reduction overcompensate for increasing Anthropic solar luminosity. Constant 7: Yet, Rate if Of the Expansion activity was smaller, life-essential If the universe nutrients had expanded not be at recycled a rate one adequately millionth and more greenhouse-gas slowly than it reduction did, expansion not have stopped and the universe compensate have collapsed for increasing on itself solar before luminosity. any stars had formed. If it had expanded faster, then no galaxies have formed. Ozone level in the atmosphere. Life on Earth survives because the ozone level is within the safe range for habitation. However, if the ozone level were much greater, there be too Anthropic Constant 8: Speed Of Light Any little UV the laws radiation physics for adequate can be plant described growth. as a Yet, function if the ozone the velocity level were light much (now smaller, defined there to be 299,792,458 be meters too much per UV second). radiation Even for a slight adequate variation plant in growth, the speed and life light be impossible. alter the other constants and preclude the possibility life on earth. GET WITH A PARTNER: FINISH YOUR SHEET AND MNEMONIC!