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