The earth-sun system
The earth-sun-moon system
The solar
system
Stars
Galaxies and beyond
100
The study of the universe.
What is astronomy
100
The shape of the moon we see in the night sky.
What is phases of the moon
100
Something that consist of a star, such as the sun, as well as all the planets, moons, and other bodies traveling around it.
What is solar system
100
A large, hot ball of gasses, held together by gravity, that gives off its own light.
What is star
100
A group of stars cluster held together by gravity.
What is galaxy
200
Everything that exists, including earth, the planets, the stars, and all of space.
What is universe
200
When earth blocks sunlight from reaching the moon.
What is lunar eclipse
200
The second property that keeps the planets in orbit
What is inertia
200
A group of stars that appear to form a pattern.
What is constellation
200
A band of colors
What is spectrum
300
A device that collects light and magnifies images to make distant objects appear closer, larger, and brighter.
What is telescope
300
When earth passes through the moons shadow.
What is solar eclipse
300
A ball of ice and rock that orbits the sun.
What is comet
300
The apparent shift in an objects position when viewed from two locations.
What is parallax
300
As space expands, the absorption lines.
What is expansion redshift
400
A vertical belt, about 15 degrees wide in longitude, in which all locations have the same time.
What is standard time zones
400
The regular rise and fall of the water level along a shore.
What is tide
400
Small, rocky or metallic object that orbits the sun in both the inner and outer regions of the solar system.
What is meteoroid
400
The use a measurement of distance.
What is light-year
400
Sent matter out in all directions.
What is Big Bang
500
A line at a longitude of 180 degrees.
What is international date line
500
The force of attraction among all objects
What is gravity
500
A meteoroid that strikes earths surface.
What is meteorite
500
A huge cloud of gas and dust in space.
What is nebula
500
Comes from all directions in space.
What is background radiation
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