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