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