question: If Mona shines a light through both wool and cotton and determines that cotton is more dense then wool, which material will the light move faster through?
choices.text: wool cotton
choices.label: A B
para: The more dense the medium, the slower the light moves.
para_anno.effect_prop: the light moves
para_anno.cause_dir_str: more
para_anno.effect_dir_str: slower
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: dense the medium
question_anno.more_effect_dir: move faster
question_anno.more_effect_prop: light