question: Karen is observing an electromagnetic wave and how it travels from its source. This wave travels near to its source, because the energy is diluted
choices.text: more less
choices.label: A B
para: However, the energy is diluted as an electromagnetic wave travels farther from its source because it spreads out over an ever-larger area.
para_anno.effect_prop: diluted energy
para_anno.cause_dir_str: farther
para_anno.effect_dir_str: diluted
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: travel distance
question_anno.more_effect_dir: more diluted
question_anno.less_effect_dir: less diluted
question_anno.less_cause_prop: wave
question_anno.more_effect_prop: energy
question_anno.less_effect_prop: energy
question_anno.less_cause_dir: energy