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