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