Classification of Igneous Rocks: Intrusive vs. Extrusive 

What another beautiful day learning about R O C K S

I've got other geology channels I follow (GeoGirl & Geology Hub, for examples), but there's never too many geology videos for me. 😊 Thanks, Dave, for all you do! ❤❤

Always excited whenever a video discussing rocks appears on my screen :)

Your videos really help me...thank you!

Your videos are amazing prof

Every month of year you share a video about rocks

I'd like to see you cover related studies such as gemology and mineralogy. I bet you could have fun w/ the metaphysical types too ^^

I discovered Professor Dave a few days ago and I'm already a big fan! Great channel. Sei grande!

Hey Dave, have you ever gotten any requests to do Devils Tower, WY? Seems to be a lot of speculation about it's origin. Everything from a laccolith to a full blown volcano and even some people(dummies) think it's a fossilized giant tree stump!

Professor Dave Farina, i’ve seen this bot that made 21 replies to comments as of writing this. Could you crack down on these bots? They are the bots that have the same profile picture as you, but with numbers sometimes enclosed in circles in their names, and they spam.

hi sir, can u upload a loop of ur introduction background music only if it's okay? I like listening to ittt

Thank you sir🎉🎉🎉🎉🎉❤❤❤👍👍👍👍🙏🙏🙏🙏🙏😁😁😁😁😁😁😁😘😘😘😘🙄🙄

What type of rock is a flerf's brain made of? lol.

Igneous Rock is my favorite kind of music.

would you consider adding spanish subs? 😿 it would be really helpful i wanna send your vids to my friends but i don’t think they would understand clearly ;( loved the video and explanation btw they were rlly helpful thank u sm 🩷

would welcome a similar video about sedimetary rock...

Unrelated to this particular video, but related to other videos: Professor Dave, I think I know why you call yourself a professor even though you're not technically a professor. It's not because you want to appear smart or claim false authority, it's because you want to give those poor sods brave enough to try and debunk you a last meal, a last comfort of sorts before the drowning tirade of stupidity and debunks come in. In every "debunk" made of Professor Dave's content made by pseudoscientists, they always refer to him as "Professor" Dave, or bring up the fact that he isn't a real professor in their arguments, and they have a reason for doing it. It's because calling Dave out on his supposed "fake professorship," is all that these enlightened human beings will ever get to actually discrediting Dave, and that's saying a lot. Were a professional scientist try to to debunk Dave, they would not need to resort to calling him out on this. They would say something along the lines of, "Dave Farina here is wrong, here is the evidence, this is why" They don't need to criticize Dave's choice of a title for his RU-vid channel, because in theory their facts alone should be enough to disprove Dave, which is why every ID subscriber and other creationists frequently use this, because it's the only credibility they'll ever get. Dave is being merciful at letting these guys use this, because he knows that they are just nitpicking at every single hole they can find. It's the sweet swan song of these idiots before everything they say blows up in their face.

I like rocks😊

Sometimes you are Badass, sometimes Dick, you are non other but professor David.

Loved the outro! Lol, to be young!

can someone tell me what is the name of the background music of his intro??

Prof Dave time to contact the flat earthers and see what their up to

Thanks

1:23 nice

can you make a video about our consciousness and where its coming from and how every individual is unique to one another

👏👍