Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Mesopotamians, Zoroastrians, Egyptians, Arabs and Babylonians |
1st encounters of ideas |
|
|
|
Golden Age of Astronomy (600 BC - 160 AD) |
____________ (time period) was centered in ___________ |
Greece |
|
|
Geocentric View |
The Earth is the ______ of the universe, it did not ______ and is the _________ object in it, and everything else is quite small and secondary to it (Believed until ____ century) |
Center; move; largest; 16th |
|
|
Aristotle (384-322 B.C.) |
The heavens were composed of 55 concentric, crystalline ________ to which celestial objects were attached, rotating at different ______ with the Earth at the center |
Spheres; speeds |
|
|
Ptolemaic System |
Earth was surrounded by revolving, transparent, crystal spheres (System) Retrograde Motion |
|
|
|
Claudius Ptolemy (85-165 A.D.) |
Predicted _________ positions Geometry of epicycles (___________) __________ Motion of planets |
Planetary; Almagest; Retrograde |
|
|
Tychonian Model |
Semi-geocentric solar system model - the sun orbits the _______ but the remaining planets orbit the ____ |
Earth; Sun |
|
|
Tycho Brahe (1546-1601) |
Built 1st astronomical observatory, _________ Made accurate measurements of planetary positions (naked eye) Semi-geocentric Solar System Model |
Uraniborg |
|
|
Heliocentrism (Copernican System) |
The sun is at the center and the earth and other planets move around it Horrified _________ __________ then |
|
|
|
Helios Kentron |
Greek: _________- sun _________ - center |
|
|
|
Aristarchus (312-230 B.C.) |
Used geometry and trigonometry to determine relative sizes and distances of sun, moon and Earth Suggested that Earth spins on its axis |
|
|
|
Nicholas Copernicus (1473-1543) |
Explained the retrograde motion from heliocentric view; planets moved in circular orbit around the sun (incorrect) Earth spins on its axis; ______ orbits around earth "__________________________" - work |
Moon; On Revolutions of Heavenly Bodies |
|
|
Parallax Effect |
Retrograde Motion of planets accdg. to Copernicus |
|
|
|
Retrograde Motion |
Due to the difference ★ time it takes the Earth to orbit the Sun and the time it takes other planets to orbit the Sun "_____________________" |
De Revolutionibus Orbium Coelestium (1543) |
|
|
Johannes Kepler (1597) |
Hired by Tycho Brahe Planets close to the sun move ________ than those far away A mysterious force resides in the sun and has greater effect on closer objects Suggested __________ (Gravitational force) |
Faster; Magnetism |
