question: When two crests are closes together in a wave what increases?
choices.text: frequency amplitude
choices.label: A B
para: The closer together the particles are, the greater the amplitude of the wave.
para_anno.effect_prop: amplitude
para_anno.cause_dir_str: closer
para_anno.effect_dir_str: greater
para_anno.cause_dir_sign: LESS
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: distance
question_anno.less_cause_prop: things in a wave