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Astronomy 25
Contributed by: Trieu
(Original author: Collins)
  • 1. Billions of stars held together by gravity
A) super nova
B) constellation
C) galaxy
D) solar system
  • 2. All of space and everything in it
A) solar system
B) Universe
C) mega verse
D) galaxy
  • 3. Our sun looks bigger and brighter than other stars because
A) it's bigger than the other stars
B) The other stars are in another galaxy
C) Its closest to earth
D) It's different than all the other stars
  • 4. Name the order of the planets
A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, 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, Saturn, Jupiter, Neptune, Uranus
  • 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) galaxies form
B) black holes form
C) comets form
D) stars are formed
  • 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 made of rock
C) its orbit is a shorter distance
D) because the inner planets are smaller
  • 8. Which planet is farthest from Earth?
A) Uranus
B) Mercury
C) Jupiter
D) Venus
  • 9. Comets are made of
A) frozen gas and dust
B) real snow balls
C) rocks
D) clouds
  • 10. Why is Earth unique in the solar system?
A) It has life
B) All of these
C) It has oxygen to breath
D) It has liquid water
  • 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) year
B) day
C) month
D) decade
  • 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) revolution
B) spinning
C) rotation
D) retrograde
  • 15. Particles from the sun cause gases to glow in our atmosphere called
A) auroras
B) magnetic storm
C) glow show
D) fireworks
  • 16. The sun has more gravity than the planets because it ...
A) it is made of gas
B) is hot
C) is bigger
D) has the most mass
  • 17. A moon revolves around a
A) the asteroid belt
B) nothing
C) planet
D) a star
  • 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) asteroids
B) meteorites
C) comets
D) exoplanets
  • 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) a light year
B) 365 days
C) 24 days
D) 24 hours
  • 22. Stars are made mostly of
A) hydrogen
B) carbon
C) oxygen
D) methane
  • 23. Earth's closet star is
A) the moon
B) the sun
C) Big Dipper
D) the asteroid belt
  • 24. The name of our galaxy is
A) Andromeda
B) Milky Way
C) Antares
D) Orion
  • 25. A planet revolves around a
A) galaxy
B) moon
C) star
D) pickle
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