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Astronomy 25
  • 1. Billions of stars held together by gravity
A) galaxy
B) constellation
C) super nova
D) solar system
  • 2. All of space and everything in it
A) mega verse
B) solar system
C) galaxy
D) Universe
  • 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) It's different than all the other stars
D) The other stars are in another galaxy
  • 4. Name the order of the planets
A) Mercury, Venus, Earth, Mars, Saturn, Jupiter, 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, Jupiter, Saturn, Neptune, Uranus
  • 5. The theory that explains how the universe began
A) Big Pop
B) Supernova
C) Big Bang
D) Big Daddy
  • 6. A nebula is where
A) black holes form
B) stars are formed
C) galaxies form
D) comets form
  • 7. A planet closer to the sun has a shorter year than one father away because
A) its orbit is a shorter distance
B) because the inner planets are smaller
C) because it has no moon.
D) because the inner planets are made of rock
  • 8. Which planet is farthest from Earth?
A) Jupiter
B) Venus
C) Uranus
D) Mercury
  • 9. Comets are made of
A) real snow balls
B) frozen gas and dust
C) rocks
D) clouds
  • 10. Why is Earth unique in the solar system?
A) It has life
B) It has liquid water
C) It has oxygen to breath
D) All of these
  • 11. Why don't we have any pictures of our own galaxy?
A) It's too dark
B) We cannot get far enough away to take a picture of something so big.
C) It is moving too fast, so the picture would be blurry.
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) light-years
B) orbit speed
C) gravity
D) magnetism
  • 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) glow show
B) auroras
C) fireworks
D) magnetic storm
  • 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) the asteroid belt
C) planet
D) a star
  • 18. Earth's rotation time is
A) 1 year
B) causes seasons
C) 365 days
D) 24 hours
  • 19. Large rock-like objects that are too small to be planets
A) meteorites
B) exoplanets
C) asteroids
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) 24 hours
B) 365 days
C) 24 days
D) a light year
  • 22. Stars are made mostly of
A) hydrogen
B) methane
C) oxygen
D) carbon
  • 23. Earth's closet star is
A) the asteroid belt
B) Big Dipper
C) the moon
D) the sun
  • 24. The name of our galaxy is
A) Milky Way
B) Orion
C) Andromeda
D) Antares
  • 25. A planet revolves around a
A) moon
B) pickle
C) galaxy
D) star
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