Astronomy 25
  • 1. Billions of stars held together by gravity
A) constellation
B) galaxy
C) super nova
D) solar system
  • 2. All of space and everything in it
A) solar system
B) Universe
C) galaxy
D) mega verse
  • 3. Our sun looks bigger and brighter than other stars because
A) it's bigger than the other stars
B) The other stars are in another galaxy
C) It's different than all the other stars
D) Its closest to earth
  • 4. Name the order of the planets
A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus
B) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune
C) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
D) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Neptune, Uranus
  • 5. The theory that explains how the universe began
A) Big Bang
B) Supernova
C) Big Daddy
D) Big Pop
  • 6. A nebula is where
A) stars are formed
B) black holes form
C) comets form
D) galaxies form
  • 7. A planet closer to the sun has a shorter year than one father away because
A) because the inner planets are made of rock
B) its orbit is a shorter distance
C) because it has no moon.
D) because the inner planets are smaller
  • 8. Which planet is farthest from Earth?
A) Jupiter
B) Uranus
C) Venus
D) Mercury
  • 9. Comets are made of
A) frozen gas and dust
B) rocks
C) clouds
D) real snow balls
  • 10. Why is Earth unique in the solar system?
A) It has life
B) It has oxygen to breath
C) It has liquid water
D) All of these
  • 11. Why don't we have any pictures of our own galaxy?
A) It's too dark
B) It is moving too fast, so the picture would be blurry.
C) We cannot get far enough away to take a picture of something so big.
D) It only likes selfies.
  • 12. The time it takes a planet to rotate on its axis once is a _______ on that planet.
A) year
B) day
C) decade
D) month
  • 13. The major force that holds bodies in space together is
A) magnetism
B) orbit speed
C) light-years
D) gravity
  • 14. The motion of one body in space orbiting another body in space
A) spinning
B) revolution
C) rotation
D) retrograde
  • 15. Particles from the sun cause gases to glow in our atmosphere called
A) auroras
B) magnetic storm
C) glow show
D) fireworks
  • 16. The sun has more gravity than the planets because it ...
A) is hot
B) has the most mass
C) it is made of gas
D) is bigger
  • 17. A moon revolves around a
A) a star
B) the asteroid belt
C) planet
D) nothing
  • 18. Earth's rotation time is
A) 365 days
B) 1 year
C) 24 hours
D) causes seasons
  • 19. Large rock-like objects that are too small to be planets
A) asteroids
B) meteorites
C) exoplanets
D) comets
  • 20. The closer a planet is to the sun...
A) the longer the year
B) the faster it rotates
C) the faster it revolves around the sun
  • 21. The Earth's revolution time is
A) 24 days
B) 365 days
C) 24 hours
D) a light year
  • 22. Stars are made mostly of
A) oxygen
B) hydrogen
C) carbon
D) methane
  • 23. Earth's closet star is
A) the moon
B) the sun
C) the asteroid belt
D) Big Dipper
  • 24. The name of our galaxy is
A) Milky Way
B) Andromeda
C) Orion
D) Antares
  • 25. A planet revolves around a
A) galaxy
B) pickle
C) star
D) moon
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