question: If Jim raises the temperature of the air inside his balloon, will his balloon rise higher into the air or sink towards the ground?
choices.text: rise higher sink lower
choices.label: A B
para: Warm air is less dense than cool air, so it rises higher in the troposphere.
para_anno.effect_prop: density
para_anno.cause_dir_str: warm
para_anno.effect_dir_str: less
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: air temperature
question_anno.more_effect_dir: lower
question_anno.less_effect_dir: higher
question_anno.more_effect_prop: sink
question_anno.less_effect_prop: rise
question_anno.less_cause_dir: rise