Planet features
Inner-Planets
Outer-Planets
Moons
Special Features
100
How much water is on the surface of the earth (By percentage)
70%
100
What planet is the closest to the sun?
Mercury
100
Which planet is the farthest from the sun?
Pluto
100
How many moons does Earth have?
One
100
How many planets are in the solar system?
9(Counting Pluto)
200
What is different about Uranus' axis?
Its axis is nearly a horizontal axis.
200
Which planet is hotter, Mercury or Venus?
Venus.
200
What is the huge storm on Jupiter called?
The Great Red Spot.
200
How many moons does Pluto have?
3 moons.
200
The asteroid belt is between what two planets?
Mars and Jupiter
300
What are Saturn's rings made of?
Rock and ice
300
Which 2 planets are similar in size?
Venus and Earth
300
What 3 planets have rings?
Uranus, Saturn, and Neptune
300
What moon found orbiting mars has an icy surface?
Europa
300
The Oort cloud is made up of billions of what?
Comets
400
What element causes Mars' soil to turn red.
Iron Oxide
400
What is the temperature in Venus?
450-475 C or 842-887 F
400
When was Uranus discovered?
1781
400
How many moons does Neptune have?
13
400
What comet is the biggest and brightest comet seen from Earth?
Hale-Bopp
500
What specific chemical makes Neptune look blue?
Methane
500
What was the name of the first American spacecraft to orbit Mercury?
the Mariner 10
500
Name ALL the chemicals found in Jupiter
Hydrogen, Helium, Ammonia, Methane, and water vapor
500
How many moons orbit Jupiter?
At least 63
500
What Japanese space probe studied the asteroid called Itokawa in November, 2005?
Hayabusa
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