A) loops B) particles C) force D) nucleus
A) solar wind B) force C) particles D) nucleus
A) particles B) loops C) nucleus D) fluorescent
A) solar wind B) loops C) fluorescent D) nucleus
A) force B) particles C) nucleus D) loops
A) force B) fluorescent C) solar wind. D) loops
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) 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 planet B) a snowball C) a ball of frozen gases D) a star
A) dentists B) doctors C) astronomers D) astronauts
A) around the sun B) behind the moon C) between the planets D) past the farthest planet
A) a planet B) a coma C) an asteroid D) gravity
A) bulb shooting star B) dirty snowball C) solar wind D) fluorescent light bulb
A) rocks B) gas and dust C) fur D) ice
A) comets B) boulders C) asteroids D) meteors
A) periods B) loops C) ellipses D) years
A) traveling comets that can change our lives B) how to become an astronomer and learn to write books. C) what comets are made of and how they move and change D) when the next solar system will appear in the universe |