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