What did Galileo make significant improvements in?
The telescope
200
Where did Ptolemy live?
He lived in Alexandria, Egypt.
200
Was Aristarchus's model excepted at that time?
No, it was not widely excepted.
200
Where did Aristotle think the Earth was in the universe?
The center of all things.
300
In Copernicus's time data was still based on observations with the..............
Naked eye.
300
What model did Galileo show that Earth was not the only object that could be orbited?
The heliocentric model.
300
How long did his model of the geocentric last?
1,400 years.
300
What did Aristarchus attempt to measure the distance between the moon and the........................
sun.
300
What was Aristotle?
Aristotle was a Greek philosopher.
400
Copernicus adopted who's idea that planetary paths should be in perfect circles?
Ptolemy's idea.
400
Today, The moons Io, Europa, Callisto, and Ganymede are known as.......
the Galileo satellites
400
What is the ''Wheels on wheels'' system?
It's a model that represented the planets to move in a constant speed in a perfect circles.
400
What model is Aristarchus reported to have proposed?
The heliocentric model.
400
This apparent shift in the position of an object when viewed from different locations is known as ............
parallax
500
What are Kepler's three principles. Otherwise known as Kepler's laws?
The first law states that planetary orbits are ellipses with the sun at one focus. The second law states that planets move faster in their orbits when closer to the sun. the third law relates the distance of a planet from the sun to the time it takes to go once around it's orbit.
500
What moons did Galileo observe through his telescope that were orbiting Jupiter?
Galileo observed the moons Io,Europa,Callisto, and Ganymede orbiting Jupiter.
500
What is the time period Ptolemy lived in?
about(100-170 CE)
500
Aristarchus's ratio of distances was much too ...................
small
500
What was Aristotle's model placed the...................................................
moon, sun, planets, and stars on a series of circles that surrounded Earth.