Vocabulary
Inner Planets
Outer Planets
Space Objects
Miscellaneous
100
A massive group of stars, gas, and dust in space
What is a galaxy?
100
Describe the surface of the inner planets
What is hard and rocky?
100
Describe the surface of the outer planets
What is gaseous?
100
A frozen mass of ice and dust that orbits the sun
What is a comet?
100
True or False:
Both the inner planets and the outer planets revolve around the sun.
What is true?
200
Chunks of rocks found in the space between Mars and Jupiter
What are asteroids?
200
The inner planets are _____ than the outer planets.
What is smaller?
200
The outer planets are _____ than the inner planets.
What is larger?
200
A natural object that orbits a planet
What is a moon?
200
This picture shows a _____ galaxy.
What is spiral?
300
What is a comet?
300
The largest of the inner planets
What is Earth?
300
The outer planet with the least number of moons
What is Neptune?
300
True or False:
Asteroids revolve around the sun.
What is true?
300
The force that holds a galaxy together
What is gravity?
400
Consists of the planets, asteroids, and comets that orbit the sun, as well as the planets’ moons
What is our solar system?
400
The inner planet with the shortest orbit
What is Mercury?
400
What is Saturn?
400
True or False:
The sun is the largest star in the Milky Way.
What is false?
The sun is an average-sized star compared to other stars in the Milky Way Galaxy.
400
The order of the planets from the sun
What is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune?
500
The circular movement of an object, such as a planet or moon, around an object that can hold it in place with gravity, such as a sun or large planet
What is orbit?
500
Called the Red Planet
What is Mars?
500
The largest planet in our solar system
What is Jupiter?
500
A giant ball of hot, glowing gases
What is a star?
500
Put the following systems in order from the greatest number of stars to the fewest stars.
- the Milky Way
- the universe
- our solar system
What is the universe, the Milky Way, and our solar system?