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- 1. Multiple Choice
A philosopher that proved the Earth is a sphere & thought it was at the center of the universe.
Plato
Anaxagoras
Aristotle
Eudoxus
- 2. Multiple Choice
His model of the Earth-centered universe was the cornerstone of astronomy for 1,500 years.
Claudius Ptolemy
Nicolaus Copernicus
Galileo Galilei
Pythagoras
- 3. Multiple Choice
The heliocentric model was actually first proposed by:
Aristotle
Archimedes
Aristarchus
Eratosthenes
- 4. Multiple Choice
Why did people centuries ago believe that Earth was the center of the universe and that everything rotated around it?
They were not good at making observations.
The sun and moon appear to go around the earth from our perspective.
The universe has changed since the early days.
Earth and the other planets were not visible to people then.
- 5. Multiple Choice
Ptolemy thought that the planets orbit the Earth rather than the Sun. How did he explain the retrograde motion of planets like Jupiter?
The Sun roamed about among the planets and pulled them out of their circular orbits.
The planets moved on a separate circle called, an epicycle, whose center in turn circled a point near Earth.
The planets moved in very elongated ellipses, and their speed in orbit changed radically over the course of a year.
The planets moved along a circle centered on the Earth, sometimes in a forward direction and sometimes in a backward direction.
- 6. Multiple Choice
Ptolemy hypothesized that planets travel in circular orbits centered around the Earth. He called these circular orbits __________.
Ellipses
Epicenters
Epicycles
Epic Cycles
- 7. Multiple Choice
Geocentric models place the _______ at the center of the universe?
Sun
Moon
Stars
Earth
- 8. Multiple Choice
Ancient civilizations achieved all of the following in astronomy EXCEPT...
Keeping track of the time of day
Keeping track of the time of year
Tracked stages of the star cycle
Tracked cycles of the Moon
- 9. Multiple Choice
What is the heliocentric view?
A sun-centered solar system
A Earth-centered solar system
A Moon-centered solar system
A Star-centered solar system
- 10. Multiple Choice
Which astronomer of antiquity measured the size of the earth?
Aristarchus
Ptolemy
Copernicus
Eratosthenes
- 11. Multiple Choice
Ancient astronomers used 'epicycles' to explain...?
Retrograde Motion
Constellation Movement
Moon's Phases
Planetary Transits
- 12. Multiple Choice
He defined the brightnesses of stars (made a scale) & discovered the wobble of the Earth's axis
Claudius Ptolemy
Hipparchus
Eudoxus
Aristarchus
- 13. Multiple Choice
The "backward loops" that most planets would appear to do once a year is called
planetary motion.
retrograde motion.
prograde motion.
a mystery.
- 14. Multiple Choice
Why did the Ancient Greeks consider the stars to be "fixed" and non-moving?
stars did not change positions over time like planets
the stars were represented by the gods
stars were considered to be so old they couldn't move
they knew that the stars were always there
- 15. Multiple Choice
Heliocentric theory has the ____ revolving around the Sun, with only the ____ orbiting Earth.
star, planets
moon, sun
stars, moon
planets, moon
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