Numbers
Moons
Surface
Atmosphere
Other
100
Mercury's orbit is this long.
What is 88 days?
100
Mercury has no moons because of this.
What is being to close to the sun?
100
This is why Mar's surface is red.
What is iron (rust)?
100
These two things protect the Earth from solar radiation.
What is Atmosphere and magnetic fields?
100
One rotation of Neptune takes this long.
What is 16 hours?
200
Venus gets this hot.
What is 465 C?
200
Saturn's rings are made of this.
What is ice crystals, sand and rock?
200
Earth appears to be a light blue spot from this planet.
What is Mercury?
200
This protects the earth's surface from space debris.
What is atmosphere?
200
Mars does not have one of these.
What is a magnetic field?
300
Earth's oldest tree is this old.
What is 9950 years?
300
Uranus has this many moons.
What is 27?
300
The dark side of Mercury is this cold.
What is -280 C?
300
CO2 is the main gas in the atmosphere of this planet.
What is Mars?
300
This planet has no moons.
What is Venus?
400
This planets day is 9 h 56 min long.
What is Jupiter?
400
Daily Double!!!!! These four planets have planetary rings.
What is Saturn, Uranus, Neptune and Jupiter?
400
Mar's largest volcano is this big.
What is 24 km?
400
Uranus appears blue because of this.
What is methane in the atmosphere?
400
This space craft was the first to visit Mars.
What is Mariner 4?
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