What is lava made of?

Moment of Um - A podcast by American Public Media

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Kids & Family

Lava is the red-hot gloop that comes pouring out of an erupting volcano. But what is it made out of? Some sort of supercharged Silly Putty? Volcano guts? Super-spicy habanero sauce? We asked geoscience grad student Kelsey Woody to help us find the answer.Got a real scorcher of a question? Send it to us at BrainsOn.org/contact, we’d LAVA to find the answer for you.