The Quiz: About how much does an average cloud weigh?
A 100 pounds
B Nothing, they’re weightless
C 1 million pounds
It may look like fluff, but experts say the average cumulus cloud weighs more than 1 million pounds, calculated by weighing the water droplets the cloud contains. So, if they weigh so much, why do clouds float? Because the moist air in clouds is less dense than dry air—in other words, they float on air just as oil will float on water.
The correct answer to this quiz is 1 million pounds.