A) particles B) nucleus C) force D) loops
A) force B) solar wind C) nucleus D) particles
A) particles B) loops C) fluorescent D) nucleus
A) solar wind B) nucleus C) fluorescent D) loops
A) particles B) nucleus C) loops D) force
A) force B) solar wind. C) fluorescent D) loops
A) is written in the first person B) gives information about the solar system C) took place long ago D) tells how to make something
A) a group of stars B) the sun C) a full moon D) a flaming ball
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 star B) a snowball C) a planet D) a ball of frozen gases
A) astronauts B) doctors C) astronomers D) dentists
A) between the planets B) behind the moon C) past the farthest planet D) around the sun
A) a coma B) a planet C) an asteroid D) gravity
A) dirty snowball B) fluorescent light bulb C) bulb shooting star D) solar wind
A) ice B) rocks C) fur D) gas and dust
A) asteroids B) comets C) meteors D) boulders
A) periods B) loops C) ellipses D) years
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 |