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The [[Earth]] is the third [[planet]] form the sun [[The Sun]] and the home [[planet]] of the [[Human]] [[species]].

The [[Earth]] is the third [[planet]] form the sun [[The Sun]] and the home [[planet]] of the [[Human]] [[species]].

*[[Crust]] - The most common chemical elements in the [[Crust]] are [[Oxygen]] (46.6%), [[Silicon]] (27.7%), [[AluminumAluminium]] (8.1%), [[Iron]] (5.0%), [[Calcium]] (3.6%).*[[Mantle]] - The [[Mantle]] is mostly made of Silicate [[rock]]s.*[[Outer Core]] - The [[Outer Core]] is mostly made of [[liquid]] [[Iron]] and [[Nickel]].*[[Inner Core]] - The [[Inner Core]] is mostly made of [[solid]] [[Iron]] and [[Nickel]]. ===Earth's Atmosphere==={| class="wikitable"|-|[[File:AtmosphericGases.png|center|400px]]|-| style="height:20px; width:200px; text-align:center;" |A [[Pie Chart]] showing the percentage of different [[gas]]s in the '''Earth's Atmosphere'''.|} : The '''Earth's Atmosphere''' has not always had the same proportions of [[gas]]es. 3.9 billion [[year]]s ago there was no [[Oxygen]] in the [[atmosphere]]. In the last 200 years humans have caused the [[Carbon Dioxide]] in the '''Earth's Atmosphere''' to double. ===Earth's Resources===: '''Earth's''' resources are the parts of the [[Earth]] that [[human]]s can use to survive, build technology and provide power.: The resources on Earth are limited. Which means they can run out if we use them all. This means it's important to [[recycling|recycle]] our resources.: The resources humans need to survive are; fresh water, food and building materials. For this we need unpolluted rivers, land to grow crops and [[tree]]s and [[rock]]s to build our homes.: The resources humans need to build technology are; [[metal]] [[ore]]s and [[Crude Oil|crude oil]].: The resources humans need to provide power are; [[Crude Oil|crude oil]], [[coal]], [[Natural Gas|natural gas]], [[Nuclear Fuel|nuclear fuel]], [[biofuel]], [[Solar Power|sunlight]], [[Wind Power|wind]], [[Hydroelectric Power|river]]s, [[Tidal Power|tides]], [[Wave Power|waves]] and [[Geothermal Power|geothermal vents]].  ===Earth's Magnetic Field===: The core of the [[Earth]] spins at a different speed to the rest of the [[planet]] and this causes a [[Magnetic Field|magnetic field]].: The [[Earth]]'s [[Magnetic Field|magnetic field]] helps protect the [[planet]] against Solar Flares from [[The Sun]].{| class="wikitable"|[[File:MagneticFieldLinesEarth.png|center|300px]]|[[File:MagneticFieldEarth.png|center|300px]]|-| style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows the direction of [[Earth]]'s [[Magnetic Field|magnetic field]].| style="height:20px; width:200px; text-align:center;" |The [[Magnetic Field|magnetic field]] of [[Earth]] appears as if there were a giant [[Bar Magnet|bar magnet]] inside the [[Earth]]. The North of [[Earth]] is the [[Poles|South Seeking Pole]] of a [[magnet]].|} ==Key Stage 4=====Meaning===The [[Earth]] is the third [[planet]] form the [[The Sun]] and the home [[planet]] of the [[Human]] [[species]]. ===Structure of the Earth==={| class="wikitable"|-|[[File:EarthStructure.png|center|500px]]|-| style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing the layers of the [[Earth]].|}*[[Crust]]: The top layer of the [[Earth]] is called the [[Crust]]. It is made of [[rock]]s but two thirds is covered in a layer of [[water]].*[[Mantle]]: The layer under the [[Crust]] is called the [[Mantle]]. It is made of [[rock]] that is under such a high [[pressure]] that it behaves [[Plastic (Property)|plastically]].*[[Outer Core]]: The [[Outer Core]] is a [[liquid]] layer below the [[Mantle]].*[[Inner Core]]: Underneath the [[Outer Core]] is the [[Inner Core]] at the very centre of [[Earth]]. It is a [[solid]] [[sphere]]. ====Crust====The [[Crust]] is split into several lumps that float on the [[Mantle]]. They are called [[Tectonic Plate]]s. They move around separately and and when the rub against each other this causes [[Earthquake]]s. If one [[Tectonic Plate]] moves on top of another the [[Tectonic Plate]] underneath starts to [[melt]] and [[magma]] rises up to make [[Volcano]]es. {| class="wikitable"|-|[[File:TectonicPlates.png|center|500px]]|-| style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing the different [[Tectonic Plate]]s that make the [[Earth]]s [[Crust]].|} ===Composition of the Earth===The different layers of [[Earth]] are made of different materials.*[[Crust]] - The most common chemical elements in the [[Crust]] are [[Oxygen]] (46.6%), [[Silicon]] (27.7%), [[Aluminium]] (8.1%), [[Iron]] (5.0%), [[Calcium]] (3.6%).

*[[Outer Core]] - The [[Outer Core]] is mostly made of [[liquid]] [[Iron]] and [[NickleNickel]].*[[Inner Core]] - The [[Inner Core]] is mostly made of [[solid]] [[Iron]] and [[NickleNickel]].

: The '''Earth's Atmosphere''' has not always had the same proportions of [[gas]]es. 3.9 [[billion]] [[year]]s ago there was no [[Oxygen]] in the [[atmosphere]]. In the last 200 years humans have caused the [[Carbon Dioxide]] in the '''Earth's Atmosphere''' to double.

: '''Earth's''' [[resource]]s resources are the parts of the [[Earth]] that [[human]]s can use to survive, build technology and provide power.: The [[resource]]s resources on Earth are limited. Which means they can run out if we use them all. This means it's important to [[recycling|recycle]] our [[resource]]sresources.: The [[resource]]s resources humans need to survive are; fresh water, food and building materials. For this we need unpolluted rivers, land to grow crops and [[tree]]s and [[rock]]s to build our homes.: The [[resource]]s resources humans need to build technology are; [[metal]] [[ore]]s and [[Crude Oil|crude oil]].: The [[resource]]s resources humans need to provide power are; [[Crude Oil|crude oil]], [[coal]], [[Natural Gas|natural gas]], [[Nuclear Fuel|nuclear fuel]], [[biofuel]], [[Solar Power|sunlight]], [[Wind Power|wind]], [[Hydroelectric Power|river]]s, [[Tidal Power|tides]], [[Wave Power|waves]] and [[Geothermal Power|geothermal vents]]. 

: The [[Earth]]'s [[Magnetic Field|magnetic field]] helps protect the [[planet]]] against [[Solar Flare]]s Flares from the [[The Sun]].

|[[File:MagneticFieldLineEarthMagneticFieldLinesEarth.png|center|400px300px]]|[[File:MagneticFieldEarth.png|center|300px]]