How do caves form?

Moment of Um

American Public Media

Kids & Family, Education For Kids

4.4 • 1.5K Ratings

🗓️ 10 March 2025

⏱️ 8 minutes

🔗️ Recording | iTunes | RSS

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Summary

There are caves all over Earth. And people discover more every day! They’re found in rock, lava, ice, and even sand. But how do caves form? We asked geologist Hazel Barton to help us find the answer.

Got a deep question? Send it to us at BrainsOn.org/contact, and we’ll help explore the answer?

Transcript

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0:00.0	Hi friends. Did you catch our little experiment, Moment of Calm? It was a week of soothing science and chill sounds, plus a sleepy time dragon story. We'd love to hear your thoughts. Did it help you sleep better or help calm you down? Maybe you didn't notice the difference. Let us know by going to brainson.org slash contact. Thanks. Again,
0:23.7	share your thoughts about moment of calm at brainson.org slash contact.
0:32.5	From the brains behind brains on, this is the moment of um.
0:41.1	Answering those questions that make you go. Um, um, moment of um comes to you from APM studios. I'm Sam. The stalactite.
1:05.5	Um.
1:08.1	I'm a stalactite. You know, one of those long, skinny, pointy things hanging from the top of a cave.
1:14.4	I'm like a stone icicle.
1:16.9	I've been hanging out in this cave for, oh, about 30,000 years or so.
1:23.5	A cave is a great place to grow up.
1:26.5	Or in my case, grow down.
1:29.3	We got bats, rats, and yoga mats.
1:34.0	Seriously, someone comes in every other week and leads a yoga and meditation class.
1:38.8	You've got to try it.
1:41.4	Plus, check out this echo.
1:49.4	Yeah, I wouldn't want to live anywhere else. But the other day,
1:55.3	when I was following along with the humans meditating in the cave gallery, I did find myself thinking about the meaning of life, asking the big questions. There I was, spiraling into a void of simultaneous wonder and despair, as one does.
2:05.9	And I was wondering, how did I get here?
2:08.9	How did this cave even form?
2:11.5	Luckily, Sophie was wondering the same thing.
2:14.4	How do caves form?
2:23.9	Music the same thing. How do caves form? So the question of how caves form is actually really difficult to answer because there's so many
2:30.4	different kinds of caves. My name is Hazel Barton.
	...

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