Solar System Models
What does geocentric mean?
Earth at the center
____ is the only planet with liquid dihydrogen monoxide on its surface.
Earth
True of False?
Uranus has an axial tilt of 97.77°
True
True or False?
In Aristotle's model of the universe, orbits were elliptical
False
What were the two realms in Aristotle's model of the Universe?
Celestial and sublunar
______'s core makes up 55% of its volume
Mercury
What planet has the fastest day out of any planet?
Jupiter
Where is the Oort Cloud located?
beyond Pluto, surrounds the solar system
What is retrograde?
Apparent backward motion of celestial bodies
What is the tallest mountain in the solar system?
What planet is it found on?
Olympus Mons, Mars
Where does the Kuiper Belt start?
Beyond Neptune
Name 2/3 of Kepler's laws
1. Planets have elliptical orbits. The sun is in one of the two foci of the orbit.
2. A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.
3. T² = R³ (T= orbital period, R=distance from the Sun)
Ptolemy's model used ______ to explain retrograde.
Epicycles
What is a spin-orbit resonance?
The ratio of the planet's spin on its axis to its trips around the sun.
What are three reasons behind Pluto being reclassified as a dwarf planet?
1. eccentric orbit
2. small size
3. finding of Eris
Which planets can we see in retrograde?
All of them!