A) force B) loops C) nucleus D) particles
A) force B) nucleus C) particles D) solar wind
A) loops B) nucleus C) particles D) fluorescent
A) solar wind B) loops C) nucleus D) fluorescent
A) nucleus B) force C) loops D) particles
A) fluorescent B) loops C) solar wind. D) force
A) took place long ago B) gives information about the solar system C) tells how to make something D) is written in the first person
A) a group of stars B) the sun C) a full moon D) a flaming ball
A) Bad things always happened after a comet appeared. B) Comets appeared in the sky suddenly. C) People did not understand comets. D) Earthquakes and floods occurred after a comet appeared.
A) a star B) a ball of frozen gases C) a planet D) a snowball
A) astronomers B) astronauts C) doctors D) dentists
A) behind the moon B) past the farthest planet C) between the planets D) around the sun
A) gravity B) a coma C) an asteroid D) a planet
A) solar wind B) bulb shooting star C) dirty snowball D) fluorescent light bulb
A) gas and dust B) ice C) fur D) rocks
A) comets B) asteroids C) meteors D) boulders
A) periods B) years C) loops D) ellipses
A) traveling comets that can change our lives B) how to become an astronomer and learn to write books. C) what comets are made of and how they move and change D) when the next solar system will appear in the universe |