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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) galaxy
B) Universe
C) solar system
D) mega verse
  • 3. Our sun looks bigger and brighter than other stars because
A) Its closest to earth
B) The other stars are in another galaxy
C) it's bigger than the other stars
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, Saturn, Jupiter, Neptune, Uranus
C) Mercury, Venus, Earth, Mars, Jupiter, Saturn, 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 Bang
C) Big Daddy
D) Supernova
  • 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) because the inner planets are smaller
B) its orbit is a shorter distance
C) because it has no moon.
D) because the inner planets are made of rock
  • 8. Which planet is farthest from Earth?
A) Uranus
B) Mercury
C) Venus
D) Jupiter
  • 9. Comets are made of
A) clouds
B) rocks
C) frozen gas and dust
D) real snow balls
  • 10. Why is Earth unique in the solar system?
A) It has oxygen to breath
B) It has life
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) decade
C) month
D) day
  • 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) retrograde
C) rotation
D) revolution
  • 15. Particles from the sun cause gases to glow in our atmosphere called
A) auroras
B) glow show
C) fireworks
D) magnetic storm
  • 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) nothing
B) a star
C) planet
D) the asteroid belt
  • 18. Earth's rotation time is
A) 24 hours
B) 365 days
C) 1 year
D) causes seasons
  • 19. Large rock-like objects that are too small to be planets
A) comets
B) meteorites
C) exoplanets
D) asteroids
  • 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 days
B) 365 days
C) 24 hours
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 asteroid belt
D) the moon
  • 24. The name of our galaxy is
A) Orion
B) Milky Way
C) Andromeda
D) Antares
  • 25. A planet revolves around a
A) moon
B) star
C) galaxy
D) pickle
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