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