question: Ron watches a wave for 10 seconds and notices 10 crests. He watches another wave for 10 seconds and sees 5 crests. Which wave has a greater frequency?
choices.text: 10 crests 5 crests
choices.label: A B
para: Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.
para_anno.effect_prop: frequency of the wave
para_anno.cause_dir_str: higher
para_anno.effect_dir_str: greater
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: number of crests that pass
question_anno.more_effect_dir: greater
question_anno.less_cause_prop: crests
question_anno.more_effect_prop: frequency