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Astronomy 25
  • 1. Billions of stars held together by gravity
A) constellation
B) super nova
C) solar system
D) galaxy
  • 2. All of space and everything in it
A) galaxy
B) solar system
C) mega verse
D) Universe
  • 3. Our sun looks bigger and brighter than other stars because
A) The other stars are in another galaxy
B) It's different than all the other stars
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, Jupiter, Saturn, Neptune, Uranus
B) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Neptune, Uranus
C) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune
D) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
  • 5. The theory that explains how the universe began
A) Big Bang
B) Big Daddy
C) Big Pop
D) Supernova
  • 6. A nebula is where
A) comets form
B) galaxies form
C) black holes 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) because the inner planets are smaller
C) its orbit is a shorter distance
D) because it has no moon.
  • 8. Which planet is farthest from Earth?
A) Mercury
B) Jupiter
C) Venus
D) Uranus
  • 9. Comets are made of
A) rocks
B) clouds
C) real snow balls
D) frozen gas and dust
  • 10. Why is Earth unique in the solar system?
A) It has oxygen to breath
B) All of these
C) It has liquid water
D) It has life
  • 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) It's too dark
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) light-years
B) orbit speed
C) magnetism
D) gravity
  • 14. The motion of one body in space orbiting another body in space
A) spinning
B) revolution
C) retrograde
D) rotation
  • 15. Particles from the sun cause gases to glow in our atmosphere called
A) fireworks
B) magnetic storm
C) auroras
D) glow show
  • 16. The sun has more gravity than the planets because it ...
A) it is made of gas
B) is bigger
C) is hot
D) has the most mass
  • 17. A moon revolves around a
A) nothing
B) planet
C) a star
D) the asteroid belt
  • 18. Earth's rotation time is
A) causes seasons
B) 24 hours
C) 1 year
D) 365 days
  • 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) a light year
C) 24 days
D) 24 hours
  • 22. Stars are made mostly of
A) oxygen
B) hydrogen
C) carbon
D) methane
  • 23. Earth's closet star is
A) the asteroid belt
B) the sun
C) Big Dipper
D) the moon
  • 24. The name of our galaxy is
A) Milky Way
B) Antares
C) Andromeda
D) Orion
  • 25. A planet revolves around a
A) galaxy
B) moon
C) star
D) pickle
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