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Created page with "==Key Stage 3== ===Meaning=== The '''structure of Earth''' is what the Earth is made from, underneath the surface. ===About the Structure of the Earth=== {| class="wikita..."
==Key Stage 3==
===Meaning===
The '''structure of Earth''' is what the [[Earth]] is made from, underneath the surface.
===About the 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]].
==Key Stage 4==
===Meaning===
The '''structure of Earth''' is what the [[Earth]] is made from, underneath the surface.
===About the Structure of the Earth===
: The '''structure of Earth''' has been discovered by observing [[Seismic Wave|seismic waves]].
: Both [[P-wave]]s and [[S-wave]]s are [[refract]]ed as they move through the [[Earth]] which gives information about the [[density]] underneath the surface of [[Earth]].
: [[S-wave]]s do not travel through [[liquid]]s, as they are [[Absorb (Physics)|absorbed]], so this can show where there is [[liquid]] underneath the surface of [[Earth]].
{| class="wikitable"
|-
|[[File:SeismicWaveEarthStructure.png|center|300px]]
| style="height:20px; width:300px; text-align:left;" |This [[diagram]] shows the path of [[Seismic Wave|seismic waves]] through the [[Earth]].
[[P-wave]]s are [[refract]]ed gradually as they pass deeper into the [[Earth]] because the [[rock]] becomes more [[dense]] the deeper down.
[[P-wave]]s are [[refract]]ed at the [[interface]] between the [[Mantle]] and the [[Outer Core]]. This causes some [[P-wave]]s to change direction and results in a 'shadow zone' between 100° and 145°, from their source, where [[P-wave]]s do not reach [[Seismic Wave|seismic]] detectors.
[[S-wave]]s do not pass through [[liquid]]s and are not detected beyond 100° from their source. This shows that the [[Earth's Core|core]] of the [[Earth]] must be a [[liquid]].
|}
*[[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]].
===Meaning===
The '''structure of Earth''' is what the [[Earth]] is made from, underneath the surface.
===About the 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]].
==Key Stage 4==
===Meaning===
The '''structure of Earth''' is what the [[Earth]] is made from, underneath the surface.
===About the Structure of the Earth===
: The '''structure of Earth''' has been discovered by observing [[Seismic Wave|seismic waves]].
: Both [[P-wave]]s and [[S-wave]]s are [[refract]]ed as they move through the [[Earth]] which gives information about the [[density]] underneath the surface of [[Earth]].
: [[S-wave]]s do not travel through [[liquid]]s, as they are [[Absorb (Physics)|absorbed]], so this can show where there is [[liquid]] underneath the surface of [[Earth]].
{| class="wikitable"
|-
|[[File:SeismicWaveEarthStructure.png|center|300px]]
| style="height:20px; width:300px; text-align:left;" |This [[diagram]] shows the path of [[Seismic Wave|seismic waves]] through the [[Earth]].
[[P-wave]]s are [[refract]]ed gradually as they pass deeper into the [[Earth]] because the [[rock]] becomes more [[dense]] the deeper down.
[[P-wave]]s are [[refract]]ed at the [[interface]] between the [[Mantle]] and the [[Outer Core]]. This causes some [[P-wave]]s to change direction and results in a 'shadow zone' between 100° and 145°, from their source, where [[P-wave]]s do not reach [[Seismic Wave|seismic]] detectors.
[[S-wave]]s do not pass through [[liquid]]s and are not detected beyond 100° from their source. This shows that the [[Earth's Core|core]] of the [[Earth]] must be a [[liquid]].
|}
*[[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]].