How is what happens with the red dye in the water bin similar to what happens to a hot air balloon surrounded by cool air.
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2 points
Convection occurs, which lifts the hot air balloon because the less dense air goes to the top of the balloon.
Convection occurs, which lifts the hot air balloon because the more dense air goes to the top of the balloon
Conduction occurs, which lifts the hot air balloon because the less dense air goes to the top of the balloon.
Conduction occurs, which lifts the hot air balloon because the more dense air goes to the top of the balloon.