Presentation on theme: "Super Models Unit *Scientists*"— Presentation transcript:
1Super Models Unit *Scientists* The Scientists that contributed to the developments of models to explain the history of the universe.
2Aristotle 384BC-322BC Greek Philosopher One of the 1st to propose ideason the universe and astronomyThought Earth was round because ofthe shadow from the moon
3Ptolemy (Greek)Model of earth at center of universe (Earth-Centered Model)Said the planets and sun orbited the earthUsed math to explain his modelHis model could accurately predict position of the known planets (A good model can be used to make accurate predictions!)
4Copernicus (Polish) 1473-1543 Model with sun at center of solar system This model did a better job explaining observations. (Models should be able to help explain how things work; models are changed to include new information.)This contradicted the beliefs of the churchDied with his work still dismissed.
5Tycho BraheDanishBelieved the moon and the sun orbited the Earth BUT ALL other planets orbited the sun
6Kepler 1571-1630 (Models change as new info is available.) German MathematicianBuilt on Copernicus’ Sun-Centered Model.Used math to show that orbits were elliptical, not circular.(Models change as new info is available.)
7GalileoGalileo Galilei, was an Italian physicist, mathematician, astronomer, and philosopherWas certain earth was moving but couldn’t figure out why everything stayed fixed to its surface.In 1609 – One of the first Scientist to use telescopeTook “toy” from Holland, remodeled it and used it to look at skies; this was the telescope. (Technology influences models—allows us to gather more accurate information.)
8Galileo (Italian)If moons were orbiting Jupiter, they could not be orbiting earthThis shattered church’s model of earth at center of universe!(Change model as new info becomes available.)First observations made in 1609 of Earth’s moon with his telescope. (sketches)
9Galileo (Italian) Threatened with death Retracted claims Published findingsThreatened with deathRetracted claimsSentenced to confinement in his own house (for years) with no guests; continued his studies.
10Newton 1642-1727 Technology influences mental and physical models. Self Taught mathematicianImproved telescopeThis greatly advanced astronomyTechnology influences mental and physical models.
11Newton (English) Universal Gravitation Every piece of matter in the universe pulls every other piece of matter towards it, and vice versa. Laws of gravity that apply on earth also apply to rest of the universe. Gravity depends on mass and distance.
12Newton (English)Newton’s crowning achievementUnited all work that had preceded him about models of the solar system/universeDescribed path of moon around earth, then looked beyond ; “Gravity” was the explanation
13Edwin Hubble 1889-1953 American 1924-1st to prove that galaxies exist beyond the Milky wayThe universe is more than just us
14Geocentric Model Earth-Centered Model Moon, sun, and planets orbited the EarthGeo - Earth
15Heliocentric ModelEarth and other planets orbit the sunHelio = sun
16Highlight the following scientists Ptolemy GalileoCopernicus NewtonKepler Hubble