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Astronomy 25
Contributed by: Trieu
(Original author: Collins)
  • 1. Billions of stars held together by gravity
A) solar system
B) super nova
C) galaxy
D) constellation
  • 2. All of space and everything in it
A) galaxy
B) solar system
C) Universe
D) mega verse
  • 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, Jupiter, Saturn, Uranus and Neptune
B) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus
C) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune
D) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Neptune, Uranus
  • 5. The theory that explains how the universe began
A) Big Pop
B) Big Bang
C) Supernova
D) Big Daddy
  • 6. A nebula is where
A) black holes form
B) galaxies form
C) stars are formed
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) because the inner planets are made of rock
C) because it has no moon.
D) its orbit is a shorter distance
  • 8. Which planet is farthest from Earth?
A) Jupiter
B) Uranus
C) Venus
D) Mercury
  • 9. Comets are made of
A) rocks
B) frozen gas and dust
C) real snow balls
D) clouds
  • 10. Why is Earth unique in the solar system?
A) It has oxygen to breath
B) It has liquid water
C) It has life
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) day
D) month
  • 13. The major force that holds bodies in space together is
A) light-years
B) magnetism
C) gravity
D) orbit speed
  • 14. The motion of one body in space orbiting another body in space
A) spinning
B) retrograde
C) revolution
D) rotation
  • 15. Particles from the sun cause gases to glow in our atmosphere called
A) auroras
B) glow show
C) magnetic storm
D) fireworks
  • 16. The sun has more gravity than the planets because it ...
A) is hot
B) it is made of gas
C) is bigger
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) 24 hours
B) 1 year
C) causes seasons
D) 365 days
  • 19. Large rock-like objects that are too small to be planets
A) comets
B) exoplanets
C) asteroids
D) meteorites
  • 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) 24 hours
C) 365 days
D) a light year
  • 22. Stars are made mostly of
A) hydrogen
B) oxygen
C) carbon
D) methane
  • 23. Earth's closet star is
A) the sun
B) Big Dipper
C) the moon
D) the asteroid belt
  • 24. The name of our galaxy is
A) Andromeda
B) Antares
C) Milky Way
D) Orion
  • 25. A planet revolves around a
A) moon
B) galaxy
C) star
D) pickle
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