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