Plate Tectonics Boardworks

8/13/2019 Plate Tectonics Boardworks

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The Lithosphere!The

Structure of the Earth & Plate

Tectonics.

Date: 02/08/12.Lesson Objective ~

To become familiar with thestructure of the Earth

To look at plates

Then volcanoes


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The Earth is

2 million years old30 million years old

100 million years old4600 million years old

How old is the Earth?


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Cross setion o! the Earth


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Write your name and form on the worksheet!

Q: Does this third set of data correlate with theprevious two sets of data? Explain with examples.


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+nswers,1.Trenches

2.asalt

.Lithosphere

".#on$ection currents

%.ranite


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+nswers,1.Trenches

2.asalt

.Lithosphere

".#on$ection currents

%.ranite


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Lets watch the clip


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"late #o$ndaries



Continental dri!t



E%idene !or &late tetonis

1' (t$dy o! !ossils ) similar !ossils are !o$nd on di!!erent

ontinents' This is e%idene that these re*ions were one%ery lose or +oined to*ether'

3' (ha&e o! ontinents !it to*ether like a +i*saw'

,!ria

(o$th

,meria

2' "attern o! roks ) similar &attern o! rok layers on

di!!erent ontinents is e%idene that the roks were one

lose to*ether or +oined'



-( ( ( (( -

- - - -

onstr$ti%e

mar*in

&attern same #oth sides

The re%ersal o! the Earth.s ma*neti !ield is reorded in

the roks that solidi!y at onstr$ti%e mar*ins' The

symmetry aro$nd the mar*in is e%idene that the roks are

mo%in* a&art'

4' /a*neti !ield &attern in iron ontainin* roks

E%idene !or &late tetonis



hy do the &lates mo%e?

ConventionCurrents

Mantle

Crust


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"late -ames

African Plate

Indo AustralianPlate

NorthAmerican

SouthAmerican

Eurasian

Pacific

Nazca

Antarctic


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"late Bo$ndaries Can you name plates A and B?

A

B

African Plate

Indo AustralianPlate


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Constr$ti%e

"late

Bo$ndary

,t a onstr$ti%e &late #o$ndary two

&lates mo%e a&art' ,s the two &lates

mo%e a&art ma*ma rises $& to !ill

the *a&' This a$ses %olanoes at

this ty&e o! #o$ndary' Howe%er

sine the ma*ma an esa&e easily

at the s$r!ae the %olano does noter$&t with m$h !ore' Earth$akes

are also !o$nd at onstr$ti%e

#o$ndaries'

,n eam&le o! a onstr$ti%e#o$ndary is the /id,tlanti 5id*e'


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Constr$ti%e &late #o$ndary



(ea loor (&readin*7

8id yo$ know that the

oean !loor in the

,tlanti is *rowin* #y

3m &er year?

hih o! the !ollowin* &airs o! ontinents are mo%in*

!$rther away !rom eah other?19 E$ro&e and ,!ria

29 E$ro&e and -orth ,meria

39 (o$th ,meria and -orth ,meria

/id,tlanti rid*e



Title,///////////////////////

In your own words;,t a

:::::::&late #o$ndary two &lates

mo%e a&art' ,s the two &lates mo%e

a&art ma*ma rises $& to !ill the *a&'

This a$ses %olanoes at this ty&e o!

#o$ndary' Howe%er sine the ma*ma

an esa&e easily at the s$r!ae the

%olano does not er$&t with m$h

!ore' Earth$akes are also !o$nd atonstr$ti%e #o$ndaries'

,n eam&le o! a onstr$ti%e

#o$ndary is the /id,tlanti 5id*e'

Put these la'els on (our )ia*ra+:volcanic island ' 0orth +merican plate ' Eurasian

plate ' olcano ' rust ' antle



6 metres 36 metres 9 metres"" metres

The &lates mo%e at di!!erent rates'

The -a;a and "ai!i &lates are mo%in* a&art at a rate o!

1



, destr$ti%e &late #o$ndary is !o$nd

where a ontinental &late meets an

oeani &late'

The oeani &late desends $nder the

ontinental &late #ea$se it is denser'

,s the &late desends it starts to melt

d$e to the !rition a$sed #y the

mo%ement #etween the &lates' This

melted &late is now hot li$id rok

=ma*ma9' The ma*ma rises thro$*h

the *a&s in the ontinental &late' >! itreahes the s$r!ae the li$id rok

!orms a %olano'

8estr$ti%e

"late

Bo$ndary


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Title:::::::::::::::::::

Put these la'els on (our )ia*ra+:+ndes fold mountains ' acific 7cean '

0a8ca late 7ceanic rust ' ama rises 'antle ' olcanic eruption' 7ceanic crust

melts due to friction and heat from the mantle

In your own words: ________&late

#o$ndary is !o$nd where a

ontinental &late meets an oeani

&late'

The oeani &late desends $nder

the ontinental &late #ea$se it is

denser' ,s the &late desends it

starts to melt d$e to the !rition

a$sed #y the mo%ement #etween

the &lates' This melted &late is nowhot li$id rok =ma*ma9' The

ma*ma rises thro$*h the *a&s in the

ontinental &late' >! it reahes the

s$r!ae the li$id rok !orms a

%olano'


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Title:::::::::::::::::::

Put these la'els on (our )ia*ra+:+ndes fold mountains ' acific 7cean '

0a8ca late 7ceanic rust ' ama rises 'antle ' olcanic eruption' 7ceanic crust

melts due to friction and heat from the mantle

In your own words:________ &late

#o$ndary is !o$nd where a

ontinental &late meets an oeani

&late'The oeani &late desends $nder

the ontinental &late #ea$se it is

denser' ,s the &late desends it

starts to melt d$e to the !rition

a$sed #y the mo%ement #etween

the &lates' This melted &late is nowhot li$id rok =ma*ma9' The

ma*ma rises thro$*h the *a&s in the

ontinental &late' >! it reahes the

s$r!ae the li$id rok !orms a

%olano'


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Title:::::::::::::::::::::::::

ollision marins ' onstructive

marins

In your own words: _________#o$ndaries o$r when 2 &lates o!

similar densities mo%e to*ether =i'e' a

ontinental &late and a ontinental

&late9' This a$ses the material

#etween them to #$kle and rise $&

!ormin* !old mo$ntains'

The Himalayas are an eam&le o! a

hain o! !old mo$ntains' They ha%e

#een !ormed #y the ,!rian &late

ollidin* into the E$rasian &late'

Put these la'els on (our )ia*ra+:

collision 8one ' mantle ' 9imala&as ' Eurasian plate:


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Title:::::::::::::::::::::::::

ollision marins ' onstructive

marins

In your own words: _________#o$ndaries o$r when 2 &lates o!

similar densities mo%e to*ether =i'e' a

ontinental &late and a ontinental

&late9' This a$ses the material

#etween them to #$kle and rise $&

!ormin* !old mo$ntains'

The Himalayas are an eam&le o! a

hain o! !old mo$ntains' They ha%e

#een !ormed #y the ,!rian &late

ollidin* into the E$rasian &late'

Put these la'els on (our )ia*ra+:

collision 8one ' mantle ' 9imala&as ' Eurasian plate:


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Conser%ati%e &late #o$ndaries

eist where two &lates do notdiretly ollide #$t slide &ast

eah other alon* a !a$lt

=weakness9'

-o %olanoes are !o$nd alon*these &late #o$ndaries #$t

earth$akes do o$r'

,n eam&le o! s$h a #o$ndary

is the (an ,ndreas a$lt in

Cali!ornia'

Conser%ati%eBo$ndary


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Title:::::::::::::::::::::::

In your own words::::::::::

&late #o$ndaries eist where two&lates do not diretly ollide #$t slide

&ast eah other alon* a !a$lt

=weakness9'

-o %olanoes are !o$nd alon* these

&late #o$ndaries #$t earth$akes doo$r'

,n eam&le o! s$h a #o$ndary is the

(an ,ndreas a$lt in Cali!ornia'

ill in the #lanks two &lates a o$ntry

name and 3 &laes (:::8:::: L::

,:::::: @ (::::::::::::: oean'


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Let;s shake and bake!!!

%n &our roups &our fellow

classmates are$$ +sk them where the& ma&

find this plate on planet earth or an& other


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9omework# due in

Thursda&'?rida&2.'21stof 7ctober:

,ttah la#els to the orret &art o! the dia*ram


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A$ter ore

Cr$st

/antle

>nner ore

,ttah la#els to the orret &art o! the dia*ram'

-ame this &late #o$ndary


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-ame this &late #o$ndary

Continental r$st /antleThe oeani r$st

melts and risesE&losi%e %olanoes

Aeani &late

The oeani r$st sinks $nder

the less dense ontinental r$stEarth$akes o$r d$e to !rition

/ath the la#els to the letters

A #

$ %

E

&

'

Constr$ti%e &late #o$ndaries


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Constr$ti%e &late #o$ndaries

Aean

AeaniCr$st

/antle

MID OCEANRIDE

here wo$ld yo$ !ind older roks ) at , or at B?

A#


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/ark the !ollowin* e%ents on yo$r time line


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>ndia ollides with ,sia ) 0 m

ormation o! the ,l&s ) 30 m

8inosa$r etintion ) 6 m

/an =homo sa&iens9 inha#its the Earth ) 0'1 m

>nd$strial 5e%ol$tion =D9 0'0001 m

o$ were #orn7 ) 0'00013 m

irst !lowers a&&ear ) 100 m

/ark the !ollowin* e%ents on yo$r time line'

hat do yo$ notie?

(fi)ures are in *millions of years a)o+,

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