Sun
Planets
Other
Vocabulary
Bonus!
100
The innermost layer of the Sun
What is the core?
100
What the 4 outer planets are classified as.
What are gas giants?
100
Composed of water, gas ices, and rock.
What are comets?
100
How long it takes for a planet to spin on its axis.
What is period of rotation?
100
Where the Sun is located in the Milky Way
What is the Orion Arm?
200
The outer layer of the Sun.
What is the photosphere?
200
The smallest planet.
What is Mercury?
200
Composed of rock and/or metal.
What are asteroids?
200
How long it takes a planet to orbit the sun.
What is period of revolution?
200
Years left before the Sun runs out of Hydrogen.
What is 5 billion?
300
The two elements that make up most of the Sun.
What are Hydrogen and Helium?
300
It spins on its side.
What is Uranus?
300
A piece of an asteroid that hits the atmosphere, causing a streak of light.
What is a meteor?
300
A planet model where the planets revolve around the Sun.
What is heliocentric?
300
An area past Pluto containing small icy objects with circular orbits.
What is the Kuiper Belt
400
Where nuclear fusion takes place.
What is the core?
400
The largest planet.
What is Jupiter?
400
Where is the Asteroid Belt is located.
What is between Jupiter and Mars?
400
A planet that has a solid surface.
What is a terrestrial planet?
400
An area past the Kuiper Belt containing about 1 trillion comets.
What is the Oort Cloud?
500
When hydrogen is converted to helium.
What is nuclear fusion?
500
It is thought to have frozen water at the poles.
What is Mars?
500
What a meteor is called when it hits the ground.
What is a meteorite?
500
The property that pulls a smaller body toward a larger one.
What is gravity?
500
Names of the 5 dwarf planets.
What are Pluto, Ceres, Haumea, Makemake, and Eris?
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