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Inner Planets
Outer Planets
Space Junk
Vocabulary
Grab Bag
100
The closest planet to the Sun
What is Mercury?
100
The red spot on this planet is a storm that has lasted for centuries
What is Jupiter?
100
These small pieces of rock burn up in Earth's atmosphere
What are meteorites?
100
The imaginary line around which an object spins
What is an axis?
100
Pluto is now classified as this
What is a dwarf planet?
200
The third planet from the sun, it is the only planet that supports life
What is Earth?
200
This planet loves jewelry - it is well known for its rings!
What is Saturn?
200
Large rocky masses floating in space
What are asteroids?
200
The path an object takes around the Sun
What is an orbit?
200
One rotation of the Earth takes this long
What is one day?
300
The iron in the soil on this planet makes it appear red
What is Mars?
300
This planet's moon, Triton, may be the coldest object in the solar system
What is Neptune?
300
Frozen masses of ice and dust orbiting the sun
What are comets?
300
A spacecraft that gathers data without a crew
What is a space probe?
300
One revolution of the Earth takes this long
What is one year?
400
The clouds on this planet are made up of poisonous sulfuric acid
What is Venus?
400
This planet rotates on its side and also has rings
What is Uranus?
400
A large, natural object that orbits a planet
What is a moon?
400
A large, round object that revolves around a star and has cleared the region around its orbit
What is a planet?
400
This is the shape of the Earth's orbit
What is an ellipse? (oval)
500
This formation is a border between the inner and outer planets
What is the asteroid belt?
500
Many of these have been sent to the outer planets to collect data
What are space probes?
500
Shooting stars are actually these
What are meteors or meteorites?
500
One of the four planets in our solar system beyond Mars
What are the outer planets?
500
A large, round object that revolves around a star but has not cleared the region around its orbit
What is a dwarf planet?