Geocentric
What does geocentric mean?
Earth in the center
What does Heliocentric mean?
Sun in the center
An eccentricity of 0 would make what shape?
Perfect circle
How many laws of Planetary Motion are there?
Three
Who invented the first telescope?
Galileo
Who created the original geocentric model?
Eudoxus
Who created the first Heliocentric Model?
An eccentricity of 1 would make what shape?
An oval
What is Kepler's 1st Law of Planetary Motion?
Objects orbit in ellipses
What was Copernicus' first name
Nicolaus
What shape were the orbits in the original geocentric model?
Perfect circles
What was the original reception to Copernicus' model?
Rejected, they hated it
Which orbit is less elliptical?
A - 0.8
B - 0.6
B - 0.6
What is Kepler's 3rd Law of Planetary Motion?
The farther the object, the longer the orbit. The closer the object, the shorter the orbit
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What shape were the orbits in the Ptolemic geocentric model?
Epicycles
Who helped create the modern Heliocentric model?
Johannes Kepler
Order these from most to least elliptical:
0.07, 0.7, 0.2, 0.5
0.7, 0.5, 0.2, 0.07
Put these planets in order from shortest to longest orbit:
Jupiter, Mars, Earth, Uranus
Earth, Mars, Jupiter, Uranus
What did Galileo modify to create the telescope?
Pirate spyglass
Why did Ptolemy add epicycles to his model?
To try and explain what we now know as retrograde
What are the shapes of the orbits in the modern Heliocentric model?
Ellipses
What would be the eccentricity of an orbit with a major axis of 22 cm and the distance between the foci at 4.2 cm?
Round to one decimal place
0.2
What is Kepler's 2nd Law of Planetary Motion?
Objects will cover equal area in equal time within their orbit
What is your teacher's last name?
Engle