Structure of the Earth!
Get ready to dig deep, gang, and join us on a fascinating journey to the centre of the Earth…
The secrets buried inside our planet are revealed by recording and studying things called seismic waves. Caused by things like earthquakes, explosions and the movement of our oceans, there are two types of seismic wave – a shear wave, which won’t travel through liquid; and a pressure wave, which moves through both liquid and solids. These waves show that the Earth is made from five layers: the inner and outer core, the lower and upper mantle, and the crust.
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Packed full of fun features, jaw-dropping facts and awe-inspiring photos – it’ll keep you entertained for hours!
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Inner Core
Temperature: 5,000°C – 6,000°C
State: Solid
Composition: iron and nickel
The Earth’s inner core is a huge metal ball, 2,500km wide. Made mainly of iron, the temperature of the ball is 5,000°C to 6,000°C – that’s up to 6,000 times hotter than our atmosphere and scorching enough to make metal melt! The metal at the inner core stays solid because of the incredible pressure surrounding it.
Outer Core
Temperature: 4,000°C – 6,000°C
State: Liquid
Composition: iron, nickel, sulphur and oxygen
This liquid layer of iron and nickel is 5,150km deep. The outer core flows around the centre of the Earth, and the movement of the metals creates our planet’s magnetic field.
Lower Mantle
Temperature: 3,000°C
State: solid
Composition: iron, oxygen, silicon, magnesium and aluminium
The lower mantle is found between 670km and 2,890km below the surface, and is made from solid rock. The rock is hot enough to melt, but is solid because of the pressure pushing down on it.
Upper Mantle
Temperature: 1,400°C – 3,000°C
State: liquid / solid
Composition: iron, oxygen, silicon, magnesium and aluminium
This layer is up to 670km below the Earth’s surface. The lower part of the upper mantle is made from both solid and melted rock (liquid), while the rock in the upper region is stiffer, because it’s cooler.
Crust
Temperature: Around 22°C
State: Solid
Composition: Oceanic crust made up of iron, oxygen, silicon, magnesium and aluminium.
Continental crust made up of granite, sedimentary rocks and metamorphic rocks.
The Earth’s surface is covered by its thinnest layer, the crust. Land is made of continental crust, which is 8km to 70km thick and made mostly from a rock called granite. The layer beneath the ocean bed is made of oceanic crust, which is about 8km thick and made mainly from a rock called basalt.
By studying rocks and meteorites (rocks from space), scientists believe the Earth is about 4.5 billion years old!
Illustration: Getty Images UK
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COMMENTS1
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Utopia
This is so cool. I didnt now that there is two mantles!
lisle
lol
Sir
Cool!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:)
hello75648
cool
Huzaifa
I think too that the rock i mean the stone from the space land every time in our land and we can tell the whole people who live in here.
mckayla_11
GREAT
princess_mya2004
I LOVE THIS WEBSITE!!!!!!!!!!!!!!!!!!!!!!!
sydney bouton
i love this
KittyQueen
Awesome help! Thanks a million planets!
ch
awesome
Darian
This is so cool when I was homeschooled learned almost every thing about this so know a lot about it!
slick
very interesting
commenter
This website is really helpful for school quizzes and tests about science. Hands down, this is one of the best websites for kids to learn!
EliseDoe
This was very helpful!!
Afton
This is cool
nightfury243
Awesome website soooooo heplful
Audrea
I love dinosaurs thank you.
Nicholas41922
I love this pic
Mckenzie
This is so cool it is like epic
noahc
awesome!!!!
1234giraffe658
This is an awesome page. we are learning about this in school. :)
L3V1
coooooooooooooooooooooool
ryan123
epic
Sieanne
It is very important and interesting THANK U 4 LISTENING
HJ
WOW!
India
Amazing facts
Fatimahb77
Wow
i like turtles
Cool
IHeartMyMojo11
This is so cool! Wonderfully interesting to learn about!
Drea_Chakravorty
nice
treasure
cool
brosome
awsome
Kenziemae
This is so cool
soccergirl6
cool!!!!
A<330kk-
I was working on a science project for homework and I used this for almost all of the information. Can u please separate the mantle into the lithosphere, asthenosphere, and mesosphere? Thx!
Fizz
Gr8!! Totally helped with hw!! Thx a ton!!
popdiva777
Really easy to understand
Kevbo
this awesome
Bela
thats so cool!
VisVampire
Helped soooo much with my homework
xXGeekGirlXx
This is a brilliant website with fantastic information for children of all ages who want to learn about different topics from the National Curriculum. Also it has amazing content for younger webusers and the wording is great.
loren
I didnt now much about earth but now I now loads of things
timeboy1
AWESOME
Arjun
It is COOL
L22
Thanks this helped me with my geography homework!
Mellisa54567
In my personal opinion I consider this website a place full of knolegde and intelligence. It is just fantastic Mellisa
Penny
this is an awesome site thanks! :)
kk1
awsome
ninjaturtle1
I found this interesting
Gloria90909
This is an AMAZING website and really imformative!!
ameilia
Awesome, I like the part about the crust best!!!!!!!!
Lucio
Cool
turnmer
I love it
Lucio
Cooooooooooooooil
Frankenstien
When I was in year 3 my teacher taught me about this.
Jason Nguyen
My teacher told me to study this
Shan
That is awesome .i learned lots of about earth ,thank you so much
Jamie7272
omg so fascinating
diksha
best answer with clean picture
zghugftdft
great website tells me a lot of stuff I didnt already know. it gives me more information than I need
CHANCE
EVERYTHING IS AWESOME
LemonBob
COOL interesting and fun
John
Cool
John
Awesome information
josh123
nice web
britney
Awesome cool fact
school12345678910
good website to learn
calebba
this is awsome
calebba
info lots of it
school12345678910
great web
Ian
Nice
__KayyyMT__
GOOD JOB!!!
Lucyfox412---
Awesome! Right.
sakina
I loved it, was so easy to take notes on this for my science sol <3 :)
JENY
awesome and incredible plus fab
JENY
INCREDIBLE FABULOUS OF ALL TIMES AND FROM THE WHOLE WORLD
Coconut
Helped me loads
john
great facts!!!!!!!!!!!!!!!!!!!!!!!!
amara
cool
DWrecka Wasley
Thank you soo much this helped me get an A on a presentation
Steveee
Hey this website is cool
Steveee
Wow this is great
Jelly
this is amazeballs like so great love it
j palmer
This is cuwl
#diversatlol.com
Theres some cool facts in there
Eager
:)
lioness123
thanks for the info help with homework and school ;] lol i dont like school but this made it fun ;] ;] ;] ;]
lioness123
it was so helpful thanks ill use this site more often and maybe buy a book or three ill definitely recomed it to my friends at school
Liam
I love it
Liam
Awesome
coolkat
awesome
-A
good site
KAYLA_WALKER66
I love this
Kolt_Matthews
this website is really cool and i go to it all the time
jsmith
I LOVE THIS WEB SITE!
Tanner_The_Man
This website is pretty cool.
peter
This helped me with my homework
Battle_monkey
This website is sweet
Kirbythepikachu
AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Batman_is_me13
Wow
superman_is_me13
wow
superman_is_me13
good thinking
Soph12345
Thanks!! Helped me so much with my project!
jamie
This website is so cool it reminds me of antarctica
hazaz
TROLL
34534534543
ccooooooolllllllllllllllllll
Awesomeness
This website is awesome! It helped me a LOT when I was studying for my test!
annanananananana
it twas k
xX_C0Xx
Love This Website
xX_C0Xx
Helps So Much When Your Doing A Project.
jeff
My name is jeff
Michelle
Awesome site! Heeeeey
Vir
This is just what I need for my primary kids...Thanks =)
LOL
Love this website
hiiii
coolndude
Jhonothan
This web site is so awesome because I can always find out new things about new stuff
gigle
its so cool
carterwhigham
this really helped me on my science fair project.
CoolPheget
Yeaaaaahhh best site ever
Melanie-_
hola hi i love this page keep on learning!!
blahhhh
This is cool and helpful
Caroline
Awesome!
Ana
This is awesome!! You should try playing Animal Jam its so fun and cool!!!!!!!!!!!!
Tulio
Cool
Moose
Thank you Ngkids.com!!!
Moose
Thank you mg Kids!!!!!!!
LOL
love this web site awesome : )
LOL
love this web site awesome : )
Moose
Cool and very helpful
gtabros
kool it awsome
ks
very cool i needed that i love it really dude dude totally / 00
ks
so cool dude i like it really lol so cool dude
ks
very great and helpful
cool dude
wow gust wow
niyha
WOW COOL
niyha
wow
Bobby
Hi Im bobbt
Mia_Khalifa
omg this is omg... like just soooooo amazing <3 £> | ____/
Jeff
My name is Jeff and I am 21 baraly
math200
AWESOME
ChickenSssssssssssssstrips
lol made me lol yaaaaaaaaaa
Micshawnica
wow cool
unknown234
this is amazing it helped me very much
Madison
hello
unkown
this was amazing help! exactly what i was looking for!
Floppy
Very cool website!!
PandaFan
This is very Helpful thank you! And a nice website!
PandaFan
This is great and it helps thanks!
Fluffums
OMG LOL !!!!!!!!!!!!!!
Owen
Coooooool dude
Liza
cool
Owen
COOL
Yohan
This is so kool :) :):):):):):) I love its sososososososos Kool
ryanthomas20014
Love it!
Leo
lol
Ben
this is cool
maddy
this is an awesome website it gave me good facts for my projects
Brayden
This was very helpful on a project that i am doing in science! I got an A+ because of it! THANK YOU!
Brebre123
I love this site its better than the rest
YOYO
IT COOL THANKS
bre
awesome
bre
awesome
Lillian
This is so cool is helping me a lot.
Ayden
Really helpful.
cowboy
the best cool awesome
higrcgh
it helped a lot!!!
higrcgh
I like this site and I think it has authentic data written. The diagram was helping to understand better.
sophia
coool
bob
epic
kathrin
Nice site
kathrin
Cool site for geniuses.
kathrin
Its an amazing site
Floppy9
The earth is awesome
Sofia
Helped me with understanding schoolwork about natural disasters and layers of the Earth.
dani
hi
Jenessa
This is really good information. Its really easy to understand. I definitely need this for my Geography Assessment.
David Tillman 4646
awsome
Yannie
It gave me great imformation and yea!!
Yannie
It gave me great imformation and yea!!
Marten
did not know that the sun was a billion years old a great story love the selection of the inner core this rocks
Reya
I appreciate that taught me to learn about the structure of the earth in science for education in school.
Sheralee
Excellent helped loads
sams
good nice info
Mystery
A good resource for fun exciting facts. It is also good for science......
jaquen1
this is neccesary for me and jaquen #2
Oscar46
wow yea that cool
Oscar46
cool
Andrew
Cool
AR
great info thanks
Victoria
Great info
Eddy
I figured out that the cores are pretty far apart
lily
this helped me in school a lot
John
good site
333
love it help me sooooo mach
Luckystrike95
Its good advice thank you.
Maria
This helped me so much on my report! Thanks!!
Gabby
The best side ever
Elizabeth
I love it
9924
AWSOME
paola
cool
Logan davis 123 :)
WOW!!!!! the earth is so old hahahahaha:)
Destini
I like this app
Cheyenne
Cool
Kyle
This information rocks!
lola
this is a really good website and i wouild like to hear some more about this and cheers
crowns_up
this is for 12vies.....
bale
col
bale
it is cool
emily
cool
david
the earth is cool
leo
cool
leo
this is amazing
Anon
I like the way the mantle is split up.
Shanzie
cool
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