Who created the original "wheels on wheels" system?
Ptolemy.
100
What did Aristotle believe?
That everything revolved around the earth.
100
What is geocentric? What is Heliocentric?
Models where everything revolves around the earth. Models where everything revolves around the sun.
100
What is parallax?
The apparent shift of the position of an object when viewed from different locations.
100
In what year did Galileo improve the telescope.
1609
200
What is the "wheels on wheels" system?
Orbits upon orbits; the "wheels on wheels" system was smaller circles of orbits on larger circles of orbit.
200
Who came up with the idea that earth had an ellipse orbit?
Johannes Kepler
200
Who proposed the first heliocentric model?
Aristarchus.
200
What did Ptolemy think about the orbits of the solar system that was incorrect?
That a celestial at a constant speed in a perfect circle. Also he thought that planets moved on small circles and in turn on larger as well.
200
What four moons did Galileo discover? What did they revolve?
Io, Europa, Callisto, and Ganymede. Jupiter.
300
When did Ptolemy die?
About 170 Common Era.
300
Who thought the solar system orbits were perfect circles?
Ptolemy and Copernicus.
300
How long did astronomers use Ptolemy's geocentric model for?
14 centuries.
300
What is the main reason astronomers were mislead about our solar system? What causes this?
Our inability to see all that is in the solar system. Sometimes just incorrect conclusions or parallax can cause this.
300
Who discovered the universe didn't revolve around earth?
Copernicus.
400
What book is based off of Ptolemy's observations?
Almagest.
400
Who attempted to measure the relative distances to the moon and the sun?
Aristarchus.
400
Who proposed the first geocentric model and when did they die.
Aristotle. 322 Before Common Era
400
What helped us improve our understanding of the solar system?
Galileo's new and improved telescope.
400
What did Galileo discover about Venus?
That Venus went through phases similar to the moon.
500
What did the "wheels on wheels" system allow predictions of?
It allowed predictions of motions of planets years in the future.
500
What are Kepler's laws?
1. Planetary orbits are ellipses with the sun at one focus.
2. Planets move faster in there orbits when closer to the sun.
3. The distance of a planet from the sun relates to the time it takes to go once around it's orbit.
500
What exactly did Aristotle's model depict about what revolved around Earth? Please list what supposedly revolve around Earth.
It depicted that the moon, sun, stars, and planets revolved around Earth.
500
According to the first geocentric model in what order were the other planets from earth outward?
Mercury, Venus, The Sun(not a planet), Mars, Jupiter, and then Saturn.
500
What space shuttle was the spacecraft 'Galileo' launched off of?