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Hank and the gang return with SciShow Quiz Show, where Sci Show's resident geniuses compete to win prizes for our subscribers!
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Michael: Ladies and gentleman, boys and girls, welcome to SciShow Quiz Show, the show where science is magic. Today, we're here with Internet guy, Hank Green.

Hank: Hello Michael!

Michael: Today you will be competing on behalf of Jen Merriam...

Hank: I will do you right!

Michael: And SciShow writer Dave Loos. You are competing on the behalf of Daniel Weimann.

Dave: I'm sorry about what's about to happen.


Michael: What are these two competing for today, Stefan Chin?

Stefan: Well Michael, two of our esteemed Subbable subscribers will have a chance to win some DFTBA swag, such as this Pizza John Frisbee! Or some Pizza John socks. Or even this No Edge poster signed by Hank Green! Back to you Michael.

Michael: All right boys, are you ready?

Hank: As ready as I'll ever be. Oh yeah, party time.

Michael: You've each got a thousand points in the bank. If you get this question correctly, you'll win however much I decide.

Hank: Okay.

Dave: Sounds fair to me.

Michael: The topic is "The Moon". Which element occurs in the highest concentration in lunar soil?

[Hank buzzes]

Michael: I didn't even give you the choices yet.

Hank: Oh. [laughs]

Dave: Then you gotta make him answer then.

Hank: Is it... is it oxygen?

Michael: Give me A through D.

Hank: Oh, you want me... [laughs] I don't know how the game works!

Michael: Neither do I!

Hank: They don't let me read the script beforehand!

Michael: Um... Your choices-

Dave: He didn't want to wait. No, he didn't want to wait! He should have to-

Hank: Yeah, no, I have to,

Michael: I'll wait for the,

Hank: I'm going to say Oxygen.

Michael: The answer is Oxygen!

Dave: It's going to be a long, long day.

Michael: Congratulations! Ah, you won... 100 points!

Hank: Ugh, that's all?

Michael: Yes.

Hank: Wha - why?

Michael: It's the first question!

Hank: There's only three questions!

Michael: 105 points.

Hank: Oh my god.

Michael: Much like the Earth's crust, the most common substance in lunar soil is silica, also know as silicon dioxide or SiO2. So, by element, oxygen is the most common by far, which accounts for about 45% of lunar soil. Silicon is second, at about 20%.

Michael: Round Two, "Name that Animal". In this round you'll each have to name an animal based on its sound. It is indeed multiple choice. Ah, I may or may not tell you what kind of animal it is before you hear the sound. Okay, are you ready?

Hank: I'm ready.

Michael: What animal is this?

[Animal sound]

[Dave buzzes]

Hank: Okay, Dave buzzed in before the multiple choice.

Michael: Okay, what do you think it is?

Dave: You did it last time, so I can-

Michael: Yep.

Dave: I would say its some sort of monkey, I think gibbon or something.

Michael: Incorrect!

Hank: Oh!

Michael: Would you like to hear the choices?

Hank: I would like to hear the choices even though I, I'm- I know, I think, what kind of animal it is. But I don't know what species.

Michael: Okay.

Dave: I may been way off on that monkey guess, huh.

Michael: You may have been. Okay, is that: A. Hyena, B. Zebra, D. Sea lion.

Hank: Oh, Hyena, for sure.

Michael: Incorrect!

Hank: What?!

Michael: What?!

Hank: What?!

Michael: What?!

Hank: Is it a sea lion?

Michael: The answer is... zebra!

Hank: What?! What?

Dave: So neither of us got it.

Hank: No, yeah, we are losers.

Dave: Sorry for whoever I'm playing for.

Michael: Zero points for both of you!

Hank: Wow, a zebra?

Michael [in the studio]: There are three species of zebra, all members of the genus Equus, which includes all horses, donkeys and zebras. Some zebras are closely related to the wild ass or donkey. And if you listen, you can hear the similarity in the zebra's call.

[in the game] Dave - Yeah, okay, are you ready for the second sound?

Hank: Okay.

Michael: What bird-

Hank: Oh, more sounds!

Michael: -makes this sound?

[Animal Sound]

Dave: I'm going to wait for the multiple choice on this one.

Hank: Yeah, me too!

Michael: Okay, is that: A. a sage grouse, D. A great horned owl-

Dave: Did you just go A to D?

Hank: Yes he did.

Michael: -or X. an ostrich?

[Dave and Hank both buzz]

Hank: He got there first.

Dave: Sage grouse.

Michael: Incorrect!

Dave: Oh!

Hank: That's what I was going to say, so I'm glad you got there first!

Michael: You're on a roll, Hank.

Hank: Oh, wow. So i have to choose now?

Michael: Yep.

Hank: Okay... What was D?

Michael: I don't remember the second one!

Dave: It was an owl!

Michael: It was the great horned owl!

Dave: An owl. There were only three choices I thought.

Hank: Yeah, no there were.

Dave: Yeah.

Hank: But he said D. [pause] Anyway. I'm going say Ostrich. Cause that's weirder.

Michael: Correct!

Dave: It's also the last option available.

Michael: I'm going to give you two hundred points for that one.

Hank: Oh wow!

Michael: Woo!

Hank: I have 1303!

Michael: Five.

Hank: Five points. [laughter]

Michael [in the studio]: Ostriches make lots of different sounds, but the one you just heard was known as a boom. Which ostriches can make using a inflatable pouch in their throats. Ostriches are thought to boom either to attract mates or to warn other nearby ostriches of danger.

[at the game] Michael: And finally, What animal makes this sound?

[Animal sound]

Hank: Animals make weird sounds!

Michael: Is that a red fox, a peahen, or a skunk?

Dave: I think I'll let you guess first.

[Hank buzzes]

Hank: Yeah, that's probably the right call. (Dave: Yeah.) I'm gonna guess... a red fox.

Michael: Correct!

Hank: Oh!!! Woo!!!

Michael: For that correct answer, I shall award you 300 points.

Hank: What? That's a lot!

Dave: Yeah. Now I'm only down by 605.

Michael: We're getting into the big numbers now.

[in studio] That is one of the many things that the fox says. It's an unusual sound called gekkering that foxes make when they fight and you can learn all about what the fox really says right here.

[at the game] And now its time for Round Three. Double or nothing. You can each decide how many of your points to wager, you could lose that many, you could win that many. The topic of the next question is geologic time. Dot dot dot. (Hank: Okay.)

Michael: While they're deciding how many points to wager we will go to commercial break. Be right back. Unless there's no commercial break, 'cause that happened last time. [SciShow logo] And welcome back! Um, okay. You guys ready for the question? Cause I'm ready to give it to you.

Hank: Yes sir.

Michael: Okay. Geologic time is organized into several types of periods that go from big to small. The biggest, longest periods are called eons. We are currently in the Phanerozoic eon. Which goes back 541 million years. Then there are eras: the Cenozoic era that we are in now began 66 million years ago. Next come periods; this is the Quaternary, period which goes back about 2.6 million years. Finally there are epochs, the smallest unit. What epoch are we currently in?

Dave: Are you kidding? (Hank: Yeah.)

Michael: Are we in-

Hank and Dave: Oh, we got multiple choice.

Michael: Are we in the Miocene, Pliocene, Pleistocene or Holocene? Good luck spelling those.

[both laugh]

Dave: What was the first one again?

Michael: Miocene, Pliocene, Pleistocene, Holocene.

Hank: I do not know.

Dave: I just hope I spelled it right. [laughter] (Michael: Okay-) Which I probably didn't.

Michael: Are you ready to reveal your answers?

Hank: Yes.

Michael: Looks like ah-

Dave: Did either of us spell it right?

Michael: Um-

Hank: I think you spelled it right.

Michael: You did not spell the correctly (Hank: Oh no, oh no!), and you did not spell that correctly either. However, [laughter] you just won 800 points! (Hank: What!?)

Dave: High fives?

Hank: Oh my god! No!

Dave: High fives!

Dave: Daniel, I think I just won for you.

Michael: Holocene comes from the Greek words "Holos Kainos" or "Entirely new", and it's measured back to 11,700 years ago at the end of the last glacial period. Recently, there's been a movement among some geologists to acknowledge the beginning of a new Epoch which they call the Anthropocene to mark the first permanent impacts that humans are having on the world's ecosystems. But it hasn't been officially acknowledged by the organization that gets the final say on these things, which is a group called the "Stratigraphy Commission of the Geological Society of London".

Michael: Whoa! (Hank: Oh my God!) Coming back from behind!

Dave: You're welcome Daniel.

Hank: I'm so sorry!

Dave: This was the luckiest moment of my entire life right here.

Hank: Well one in four.

Dave: Yeah. Maybe not my entire life. [laughter]

Michael: Congratulations to Daniel Weimann. Keep an eye on your mail box for something special from DFTBA.

Thanks for joining us for this SciShow Quiz show, If you'd like one of our resident smarties to compete for you, you can go to If you have any questions, comments we're on Facebook and Twitter and down in the comments below. And of course if you want to keep getting smarter with us here at SciShow, you can go to and subscribe.