Rock Cycle Transcript
Chapter 1: …what the rock cycle is.
Ben: Everybody put their, I’m interested in what other people are trying to say
Lisa: Aren’t we supposed to find out what the rock cycle is first?
Ryan: Naw, he’s recording.
Johanna: What?
Lisa: Aren’t we supposed to find out what the rock cycle is first?
Tracy: Yeah, we know what we're supposed to talk about [???].
Johanna: We know what it is.
Ben: Let’s go over the rock cycle, let’s go over the rock cycle.
Ryan: Did anybody bring their sheets?
Johanna: Igneous rock forms, weathering occurs—
Student: No.
Student : Yeah, I did.
Gustavo: Wait a minute, I have a question. Like isn’t the rock supposed to start somehow, and then turn into like a sedimentary rock?
Students: [???]
Lisa: Yeah, yeah, starts as-
Student: It’s supposed to start as nothing.
Student: I don’t think we’re supposed to talk yet.
Students: [???]
Student: Sure we are.
Bethany: This is so confusing.
Ben: Let’s talk first so when he puts the camera on
Gustavo: The camera’s on man.
Ben: -and-and-and (laughs)-
Gustavo: The camera is on.
Students: (Laughter and talking.)
Bethany: Okay, so Johanna’s idea is to make a roller coaster ride through the rock.
Gustavo: I don't think we're ready.
Lisa: I need to get out the papers.
Students: [???]
Bethany: Okay, so what is the rock cycle?
Ben: Well it starts out as an igneous rock. éRight? And then it um-and then it like
Bethany: ëOk, so
Johanna: An igneous rock forms, weathering occurs
Bethany: Okay, wait. (pause) Igneous rock- Are you laughing at me? Igneous rock forms, weathering occurs, wait, weathering
Ryan: I have all of my sheets if we’re allowed to go back in the room.
Bethany: Occurs, what happens next? Johanna?
Johanna: Um.
Lisa: Igneous rock, it forms from magma. First we have to start éwith, with the plates-
Ben: ëThe deposits the deposits go, the deposits go-
Lisa: -running into each other, and the lava going up.
Ben: -the deposit goes through erosion and settles at the bottom of the sea
Lisa: First we have to start with uh, first we have to start with the plates– underground.
Bethany: Oh wait, so what happens?
Tracy: Teutonic plates underground.
Bethany: So the Teutonic plates move, and-
Lisa: -Yeah, that’s the very beginning.
Bethany: Okay. (writing) Teutonic (pause) plates (pause). You guys can talk while I’m writing.
Ben: And then after that happens, the sediment goes to the bottom of the ocean, and then it compresses-
Bethany: -Okay, so-
Ben: -form
Students: (Laughter.)
Bethany: So the Teutonic plates move and create rock, and then I have the igneous rock forms. Is that wrong?
Ben: No. Well-
Gustavo: I-
Lisa: No, there’s something. There was like de-desa-whatever.
Johanna: Deposition?
Lisa: Yeah, Deposition.
Bethany: What happened?
Tracy: We’re not there yet.
Ben: The deposit comes after that.
Teacher: Can I make a suggestion?
Chapter 2: You’re looking at...
Student: Oh, it does?
Bethany: Yeah.
Teacher: You’re looking at a lot of papers and using a lot of words that you don’t know what they mean.
Gustavo: [“Sure we do”?].
Teacher: And if you’re doing that, for your model, it's not going to be very good. So I want to start with what you know, not with what the paper says.
Student: Okay. so-
Johanna: Well then we don’t know anything.
Lisa: - Well the lava comes out-
Students: (Laughter and talking.)
Lisa: - out. No, the lava comes out and it hardens—
Ben: Yeah, the lava comes out.
Student: forms magma
Johanna: So, so a volcano erupts.
Bethany: Okay.
Ryan: Wham!
Ryan: Blam!
Lisa: Then the, the lava shoots up.
Bethany: Okay. So lava— So a volcano erupts.
Johanna: Mm-hmm.
Bethany: And lava comes out. Right.
Lisa: Do we have to talk about minerals too?
Students: No.
Bethany: Okay, so volcano erupts and lava comes out, the lava cools, and creates a, what?
Gustavo: A rock?
Johanna: An igneous rock?
Bethany: An igneous rock.
Gustavo: (whispered) I have a good idea.
Student: What?
Gustavo: No, but like it has nothing to do with the like-it’s like how we’re gonna make it though. It's like different.
Bethany: Sit here, okay? Okay, so after the igneous rock forms, what happens?
Johanna: They-
Tracy: Weathering.
Johanna: Weathering, weathering occurs.
Bethany: So-
Johanna: It rains.
Tracy: And rain and wind um-
Johanna: Wind, yeah wind and like wet-
Lisa: Leaves are compressed and wet-
Bethany: Rain and wind, uh-
Philip: (whispered) What's going on?
Tracy: Eroded.
Johanna: And precipitation
Tracy: (in background) Well, weathering [???]
Lisa: Yeah precipitation-
Bethany: So what happens first?
Lisa: -the leaves are blown off to the ground
Tracy: So, first the rain and the wind cause like pieces-small pieces of the érock-
Bethany: ëcauses-
Tracy: -of the rock to break off.
Students: [???]
Bethany: -small pieces (pause) of the rock (pause) to break off
Tracy: And then the big [???] to-
Bethany: Spelled that wrong too.
Students: [???]
Tracy: They carry the um-
Students: (Lots of talking)
Bethany: -carry-
Johanna: Wait, what are we talking about?
Tracy: -of [???] rock and then- you get sediment.
Johanna: Sediments form.
Bethany: Sediments form.
Johanna: From like you know, dead things, dead animals
Students: (Laughter.)
Johanna: -and like-, and they get into like water-
Tracy: -and eventually the-the rain and wind that's carrying it slows down-
Ben: They flow.
Gustavo: Weathering.
Tracy: It leaves the-
Bethany: Wait, éeventually the sediments-
Ben: ëAnd then the tide takes it to the bottom.
Tracy: The wind and the rain that's carrying it slows down and deposits the sediments.
Bethany: Sed-i-ments (pause) Aah!
Student: This is, this is-
Bethany: Why am I recording? I spell terribly. Okay, eventually sediments do what? Sediments?
Johanna: Well, they-they éw-, they get into like some body of water.
Student: ëHard rocks
Gustavo: They, they [???] like come together and form sedimentary rock.
Johanna: They get into some body of water where the éwater-
Bethany: ëinto
Johanna: -cements it.
Lisa: Cements it.
Chapter 3: Pressure, it pushes it.
Bethany: -body of (pauses) water-
Gustavo: And pressure it, it pushes éit, it presses it, and it keeps rising and rising,
Johanna: ëand-and it’s layers. It's layers-
Keren: No, isn't that émetamorphic?
Gustavo: ë-until it’s like big sedimentary rock.
Johanna: Wait-wait-wait, isn't sedimentary rock in layers?
Keren: That's metamorphic rock.
Lisa: Well like-
Tracy: And then they slow down
Lisa: Yeah sedimentary is in layers, because it's being uh uh
Johanna: That's no-n-n-n, yeah metamorphic is the grains are shifted—together-
Ryan: Pressed together.
Student: It can be.
Students: [???]
Johanna: -to being volcanic or non-volcanic-
Ryan: Let's make it a whole bunch of different rocks and just put 'em all together.
Tracy: and eventually sediments end up-
Bethany: Eventually sediments ok-
Student: They can get [“fossils too”?] -
Ryan: Instead of using hand motions-
Tracy: The wind carrying them slows down. So eventually [???] slows down and deposits the sediments.
Ryan: Ha ha ha ha, look-
Gustavo: Like, like compressing, you know?
Student: I forget-
Tracy: And this happens like over and over again, so you get a lot of layers of sediment.
Bethany: Okay, and so eventually sediments, okay well (pause) okay water is added (pause) water is added and sediments (pause) layers (pause) sediment layers are (pause) cemented together. Okay, this is what we have so far guys. All right listen. (Louder) Listen up! Okay, the volcano erupts, and lava comes out. Lava cools and makes igneous rock. Rain and wind cause small pieces of rock to break off. Sediments form, and rain and wind carry it away, and rain and wind slow down and deposit sediments and this happens over and over again to form layers. Okay, so water is added to this-
Gustavo: Sorry.
Ryan: There go those hand motions again.
Bethany: ARGH! Water is added and ésediment-
Johanna: ëPut them under your butt.
Bethany: -water is added and sediment layers are cemented. OK. What happens next?
Ben: Then-Then they écompress after more layers after more layers form
Gustavo: ëThen they compress together and they keep, they keep going up
and up and up then after a while you have big sedimentary rock.
Johanna: Which ends up breaking up.
Gustavo: Like mountains, mountain thing and what not.
Ben: And then, and then, and then, um, there's so many like layers, that it go, goes lower and lower and then it gets hotter.
Phillip: Yeah.
Students: [???]
Ben: Because it, because it-
Bethany: So it sinks?
Ben: because éit encloses more earth. And then it gets
Ryan: ëcloser it gets hotter so-
Tracy: I don't think the rock cycle really goes [???]
Bethany: Okay, tell me what you think
Tracy: -and then it gets hotter, and it compresses more with the magma, and forms metamorphic rock. (Hand gestures of crushing, closer and closer together.)
Tracy: I don't think water is really added. What happens is that the layers of sediment-
Bethany: Well, like right, but-but how do they get cemented together? They need water.
Tracy: The- the minerals, dissolved minerals crystallized, glue particles and stuff together.
Ben: [to the teacher] You aren't secretly helping them are you?
Bethany: Okay, so water isn't really added.
Ryan: I was just gonna answer that.
Students: (Laughter.)
Tracy: It's-no the layers of sediment like build pressure and [???].
Bethany: Do you want to write? (Laughs.)
Tracy: Do I want to write?
Johanna: No.
Bethany: No, okay, so water's added and sediment layers are cemented together. (pause) Then what happens? How do we form a metamor- (Bethany hands the pad to Tracy, who becomes the new recorder.)
Students: [???]
Chapter 4: We need heat and pressure.
Lisa: We need heat and pressure.
Johanna: A metamorphic, a metamorphic –
Lisa: Where we get more heat and pressure from?
Johanna: -rock forms from heat and pressure éapplied to (pause) a rock.
Lisa: ëWith what?
Students: (Laughter.)
Johanna: To any rock. To any rock, and it makes it-it changes the grains, because the heat and pressure changes the crystal structure, the texture, the appearance, the-
Tracy: Is that metamorphic?
Bethany: See you talk with your hands, too.
Ryan: Not as much as you, Bethany.
Ben: Whatever.
Johanna: And- and so, and so because, because it's an éimmen-
Lisa: ëWhere do you get the heat and
pressure from?
Johanna: -immense amount of heat and pressure, it can change any érock-
Bethany: ëbecause of the
Sediments.
Johanna: and like the grains are changed, so it's foliated or énon-foliated
Bethany: ëWhere does it get the heat and pressure?
Ryan: Over a lot of [???] time.
Johanna: No, for few seconds. Kidding
Student: [???].
Lisa: Pressure I can understand where éfrom, but the heat?
Tracy: ëcrystallized-
Bethany: Wait, where does it get heat and pressure?
Ryan: From the earth's core.
Johanna: From well ’cause it- ’cause it's underground, so it's closer to the core.
Lisa: How did it get underground?
(Ben, Bethany, Johanna, and Ryan talking simultaneously, lines 253 - 263)
Ryan: Because layers and layers build up.
Bethany: Because layers upon layers and layers on top of them.
Ben: Because it formed underground.
Student: Yeah.
Bethany: Right.
Ryan: [???] Make it go closer to the core- those layers gonna heat it up..
Ben: Oh my.
Johanna: Couldn't it have started underground?
Ryan: Then the pressure from all the other layers.
Ben: Have we- have we gone over everything now?
Student: Well—
Lisa: I don’t think so.
Ben: Well, let's-
Bethany: Tracy's still writing, so probably not.
Ben: What's time is it? Oh, we got élike-
Bethany: ëWe have like the whole period , right?
Ben: 40 minutes (pause) 40 minutes.
Bethany: Sorry. So what are you writing?
Tracy: (Laughs.) I'm at the end: sediment rock is formed.
Bethany: Okay, so sediment rock is formed, what happens after that?
Ben: Well.
Bethany: Immense heat and pressure, deep beneath the earth's surface, change the rock into a metamorphic rock.
Johanna: Changes any rock.
Ben: Because there's so émany so many layers so many layers makes it closer to the-
Gustavo: ëYeah, it like the heat, the heat- like changes
Bethany: Right—the magma.
Gustavo: -the grains, the shape, the shape of the rock.
Johanna: So, so you're saying-so you're saying that the layers of the sedimentary rock go down not up?
Ben: Well, they, no they go up, but like as they go up-
Johanna: They go down?
Students: (laughter)
Ben: No, they go up, like they go up, just forget it.
Gustavo: What?
Ryan: There's one thing I don't understand. If it keeps building on, how is it gonna-
Bethany: Cause it like it gets covered, like eventually, like the rock, élike-
Lisa: ëYeah, but then that's going to get covered, right?
Bethany: Yeah, it'll get covered, right?
Ryan: If there's so many layers it's only gonna heat the first of ‘em. How's it gonna make, like, it's way down?
Bethany: I don't know.
Keren: It moves down-it moves down because the plates are shifting and they go down.
Student: What?
Lisa: Is it possible to have a éhalf metamorphic and half-
Ben: ëPlates shift, right.
Bethany: So it goes-
Lisa: -igneous [???].
Bethany: -so it goes in éand it closes back up.
Johanna: ëSo like, so like
Johanna: So like say my rock-my shoe is a érock and here's the plates, and when they shift it falls down.
Ryan: ëSo it's revealing the-the- since the plates are moving it’s revealing the-
Bethany: Ah ha.
Student: Know that?
Lisa: Is it possible to have a half metamorphic?
Johanna: And it pushes it, if they like move back and forth like that, then it'll push it farther.
Chapter 5: Is it possible?
Lisa: Is it possible to have a half metamorphic, half sedimentary rock?
Bethany: I bet it is.
Johanna: Probably not ébecause-
Bethany: ëI bet it is though
Johanna: -the heat and pressure. But the heat and pressure are applied, so it'd change--it'd change the whole-
Student: [???] - heat is only at the bottom layer of the rock.
Ryan: If it's in the same area it-it's gotta be one thing.