Planet Size
Smallest planet
Mercury (4,879 KM)
Name the 4 terrestrial/ rocky planets
Mercury, Venus, Earth, Mars
Planet with 1 moon
Earth
This planet has the shortest rotation of 59 days
Mercury
I developed the geocentric model
Claudius Ptolemy
Largest planet
Jupiter (143,200 KM)
Name the 4 gas giants
Jupiter, Saturn, Uranus, Neptune
Add the number of moons for Mercury and Venus.
0
These two planets have a rotation difference of only 1 hour.
Earth 24 hours and Mars 25 hours
I developed the Heliocentric Model
Nicolaus Copernicus
Which two terrestrial planets are similar in size
Venus (12,100 KM) and Earth (12,756 KM)
Name 3 planets that have iron as one of their components
Mercury, Venus, Earth, Mars
How many moons does Mars have
2
Compare rotation and revolution
Rotation is spinning on axis
Revolution is the trip around the sun
Compare heliocentric and geocentric
Heliocentric has the sun in the middle with all the planets orbiting around it
Geocentric has the Earth in the middle with all the planets orbiting around it
Which two gas planets are similar in size
Neptune (49,528 KM) and Uranus (51,800KM)
The atmosphere of all gas giants share these two gases
Hydrogen and Helium
Who has more moons, Uranus or Neptune
Uranus with 28 compared to Neptune's 16
What is Earth's revolution and how does that create Leap Year
365.25 days
1/4 + 1/4 + 1/4 + 1/4 = 1 day
Who used his 3 Laws of Motion to prove Kepler's 3 Laws of Planetary Motion
Sir Isaac Newton
Jupiter is 21 times bigger than this planet
Mars
Jupiter (143,200 KM)
Mars (6, 794 KM)
What gas do Venus, Earth and Mars all have in their atmosphere
carbon dioxide
What's the difference of the number of moons of Saturn and Jupiter
179
Saturn 274
Jupiter 95
About how much longer is Neptune's revolution than Uranus' revolution?
81 years
Uranus' is 84 years and Neptune's is 165 years
Tycho Brahe and Johannes Kepler were both amazing astronomers, but they disagreed on the shape of the orbit of the planets. What were their beliefs and who was correct?
Brahe thought the orbits were round
Kepler thought the orbits were ellipses (ovals)