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Inner Planets
Outer Planets
Numbers
Miscellaneous
Vocabulary
100
This planet is closest to the Sun.
What is Mercury?
100
This planet spins on its side.
What is Uranus?
100
How long does it take for Earth to orbit around the Sun?
What is 365 Earth days?
100
This planet is no longer considered a planet because of its size and orbit.
What is Pluto?
100
These planets are close to the Sun, made of solid rock, and get heat and light from the Sun.
What is the inner planets?
200
This is the only planet in the solar system known to support life.
What is Earth?
200
This is the smallest planet of the gas giants.
What is Neptune?
200
What is the average temperature of Venus?
What is 482 degrees Celsius or 900 degrees Fahrenheit?
200
These planets are far from the sun, made of gases, and are cold and dark.
What is the outer planets?
200
An object that makes distant objects appear larger.
What is a telescope?
300
This planet is covered by thick clouds of gas.
What is Venus?
300
This planet spins so quickly that it has a slightly flattened shape.
What is Saturn?
300
How many moons have been discovered on Jupiter?
What is 63 moons?
300
These planets spin at similar speeds.
What is Mars and Earth?
300
The Sun and Planets, their moons, and other objects that orbit the Sun.
What is the solar system?
400
Many scientist believe that liquid water and life may have existed on this planet.
What is Mars?
400
Methane in this planet's atmosphere makes it appear blue.
What is Uranus?
400
What is the average temperature of Neptune?
What is -210 degrees Celsius or -346 degrees Fahrenheit?
400
This telescope magnifies distant objects by collecting light.
What is an optical telescope?
400
A large body in space that moves around a star.
What is a planet?
500
This chemical reaction gives Mars its red color.
What is rust?
500
This planet can fit all the other planets inside of it.
What is Jupiter?
500
What is Pluto's distance from the Sun?
What is 6 billion Kilometers or 3.7 billion miles?
500
This space probe was the first to collect data about the planets Mercury and Venus.
What is the Mariner 10?
500
A small body that orbits around a planet.
What is a moon?