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57 Cards in this Set
- Front
- Back
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concluded earth was round
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Aristotle
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established size ofearth
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eratosthenes
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why aristotle thought earth was round
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cast curved shadow
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nationality/year of Ptolemy
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141 ad greek
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nationality/year of Copernicus
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1473-1543 Poland
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nationality/year of Galilei
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1564-1642 Italian
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reverse direction planets stopped and move westward
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retrograde motion
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thougth Earth in center of planetary motion
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Ptolemy
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showed planets moving in circle orbit around earh
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Ptolemaic System
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first to think earth rotated
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copernicus
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first to think sun in center of solar system
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Copernicus
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persecuted by church after death
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Copernicus
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invented telescope
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Galilei
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found four satelites around Jupiter
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Galilei
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said planets were circular discs
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Galilei
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said venus has phases so venus must orbit sun
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Galilei
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wrote Starry Messenger
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Galilei
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Starry Messenger writtten what year by whom
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1610 Galilei
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discovered moon was not smooth
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Galilei
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discovered sun had sun spots
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Galilei
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heliocentric Theory
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Earth and planets revolve around a stationary Sun at the center of the solar system.
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who created Heliocentric theory
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Copernicus
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whobuilt angle measuring devise for observatory near Copenhagen
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Brahe
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why were Brahes observations more accurate
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angle measuring devise
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Brahes assistant
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Keplar
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who created "3 laws of Planetary Motion"
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Keplar
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what are three laws of planetary motion
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1)elliptical path 2)each planet covers equal area in equal time intervals 3)T2=d3
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T2=d3
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length of orbit time(squared)=distance to sun (cubed)
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who was hired by church to spy on Brahe
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Keplar
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discovered gravity
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Newton
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Lawof Universal Gravitation
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Newton
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changed Keplars 3rd law
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Newton
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change in velocity
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acceleration
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change in position divided by time
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velocity
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m/s mass/seconds
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velocity
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F=M*a
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force=Mass x acceleration
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bodys resistance to change in motion
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inertia
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Newtons 1st law
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body at rest remains at rest; body in motion remains in motion
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Newtons 2nd Law
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F=M*a
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Newtons 3rd law
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for every action (force) there is an equal and opposite reaction (force)
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catalogued 341 stars
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Halley
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comet named after him
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Halley
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Russian schoolteacher developed models for rocket propulsion
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Tsiolkovsky
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person whose work started Soviet Space Program
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Tsiolkovsky
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made rocket that reached upper atmosphere
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Oberth
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father of german rocketry
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Oberth
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first rocket in upper atmosphere used what for propulsion/fuel
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alcohol and hydrogen
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father of modern rocketry
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Goddard
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Goddardlaunched first success rocket when
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march 1926
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registered 214 patents on rocket components/parts
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Goddard
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very secret no one knew his work
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Goddard
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American Rocket inventor
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Goddard
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Goddard awarded grant to fund his research from who
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Smithsonian
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who paid 1million for Goddards patents
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NASA and DOD (department of defense)
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Nazi scientist
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von Braun
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was used to bomb London, antwerp etc in WW2
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german V2 rocket
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true or false..after war , german scientist were transported to US in secret to work on missile programs
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true
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