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Astronomy 25
  • 1. Billions of stars held together by gravity
A) galaxy
B) constellation
C) solar system
D) super nova
  • 2. All of space and everything in it
A) mega verse
B) galaxy
C) solar system
D) Universe
  • 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) Its closest to earth
D) it's bigger than the other stars
  • 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 Daddy
B) Supernova
C) Big Bang
D) Big Pop
  • 6. A nebula is where
A) comets form
B) stars are formed
C) galaxies form
D) black holes form
  • 7. A planet closer to the sun has a shorter year than one father away because
A) because it has no moon.
B) because the inner planets are smaller
C) because the inner planets are made of rock
D) its orbit is a shorter distance
  • 8. Which planet is farthest from Earth?
A) Venus
B) Uranus
C) Mercury
D) Jupiter
  • 9. Comets are made of
A) clouds
B) real snow balls
C) rocks
D) frozen gas and dust
  • 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 only likes selfies.
B) It's too dark
C) We cannot get far enough away to take a picture of something so big.
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) day
C) year
D) month
  • 13. The major force that holds bodies in space together is
A) magnetism
B) light-years
C) orbit speed
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) fireworks
B) magnetic storm
C) auroras
D) glow show
  • 16. The sun has more gravity than the planets because it ...
A) is hot
B) has the most mass
C) it is made of gas
D) is bigger
  • 17. A moon revolves around a
A) a star
B) the asteroid belt
C) nothing
D) planet
  • 18. Earth's rotation time is
A) 1 year
B) causes seasons
C) 24 hours
D) 365 days
  • 19. Large rock-like objects that are too small to be planets
A) exoplanets
B) asteroids
C) meteorites
D) comets
  • 20. The closer a planet is to the sun...
A) the longer the year
B) the faster it revolves around the sun
C) the faster it rotates
  • 21. The Earth's revolution time is
A) 365 days
B) a light year
C) 24 hours
D) 24 days
  • 22. Stars are made mostly of
A) carbon
B) oxygen
C) hydrogen
D) methane
  • 23. Earth's closet star is
A) the sun
B) the moon
C) the asteroid belt
D) Big Dipper
  • 24. The name of our galaxy is
A) Milky Way
B) Antares
C) Orion
D) Andromeda
  • 25. A planet revolves around a
A) pickle
B) moon
C) star
D) galaxy
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