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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) mega verse
B) galaxy
C) solar system
D) Universe
  • 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) It's different than all 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, Jupiter, Saturn, Uranus and Neptune
C) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Neptune, Uranus
D) Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune
  • 5. The theory that explains how the universe began
A) Supernova
B) Big Bang
C) Big Pop
D) Big Daddy
  • 6. A nebula is where
A) black holes form
B) galaxies 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) its orbit is a shorter distance
B) because the inner planets are made of rock
C) because the inner planets are smaller
D) because it has no moon.
  • 8. Which planet is farthest from Earth?
A) Venus
B) Mercury
C) Uranus
D) Jupiter
  • 9. Comets are made of
A) frozen gas and dust
B) clouds
C) rocks
D) real snow balls
  • 10. Why is Earth unique in the solar system?
A) All of these
B) It has life
C) It has liquid water
D) It has oxygen to breath
  • 11. Why don't we have any pictures of our own galaxy?
A) It's too dark
B) We cannot get far enough away to take a picture of something so big.
C) It only likes selfies.
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) decade
C) month
D) day
  • 13. The major force that holds bodies in space together is
A) orbit speed
B) magnetism
C) gravity
D) light-years
  • 14. The motion of one body in space orbiting another body in space
A) revolution
B) rotation
C) spinning
D) retrograde
  • 15. Particles from the sun cause gases to glow in our atmosphere called
A) fireworks
B) magnetic storm
C) glow show
D) auroras
  • 16. The sun has more gravity than the planets because it ...
A) is hot
B) is bigger
C) has the most mass
D) it is made of gas
  • 17. A moon revolves around a
A) nothing
B) planet
C) a star
D) the asteroid belt
  • 18. Earth's rotation time is
A) 365 days
B) 1 year
C) 24 hours
D) causes seasons
  • 19. Large rock-like objects that are too small to be planets
A) comets
B) exoplanets
C) meteorites
D) asteroids
  • 20. The closer a planet is to the sun...
A) the longer the year
B) the faster it rotates
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) carbon
B) oxygen
C) hydrogen
D) methane
  • 23. Earth's closet star is
A) Big Dipper
B) the moon
C) the asteroid belt
D) the sun
  • 24. The name of our galaxy is
A) Orion
B) Antares
C) Milky Way
D) Andromeda
  • 25. A planet revolves around a
A) star
B) moon
C) pickle
D) galaxy
الطلاب الذين أجروا هذا الاختبار خضعوا أيضًا :
Water Cycle Vocabulary
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