Open main menu

Changes

Igneous

1,239 bytes added, 09:38, 3 October 2018
no edit summary
===About Igneous Rocks===
: When [[magma]] or [[lava]] [[freezing|freezes]] it is called an '''igneous''' rock.
: When the [[magma]] is trapped underground it [[freezing|freezes]] slowly and this makes very large [[cyrstal]]s in the rock. This is called [[intrustive]] rock.: When the [[lava]] comes out of the [[volcano]] it cools down and [[freezing|freezes]] quickly making small [[crystal]]s. This is called [[extrusive]] rock.
===Examples===
{| class="wikitable"
|+ Intrusive Igneous Rocks
|-
|[[File:Granite.png|center|200px]]
|[[File:Gabbro.png|center|200px]]
|[[File:Diorite.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |[[Granite]] is an [[igneous]] rock with large interlocking [[Grain (Rock)|grains]].
| style="height:20px; width:200px; text-align:center;" |[[Gabbro]] cools very slowly underground so it has large [[crystal]]s.
| style="height:20px; width:200px; text-align:center;" |[[Diorite]] is an [[intrusive]] [[igneous]] rock.
|}
 
{| class="wikitable"
|+ Extrusive Igneous Rocks
|-
|[[File:Basalt.png|center|200px]]
|[[File:Obsidian.png|center|200px]]
|[[File:Pumice.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |[[Basalt]] forms from [[lava]] so it is an [[extrusive]] [[igneous]] rock.
| style="height:20px; width:200px; text-align:center;" |[[Obsidian]] is an [[igneous]] rock that cools so quickly that [[crystal]]s don't have any time to form at all.
| style="height:20px; width:200px; text-align:center;" |[[Pumice]] bursts out of [[Volcano]]es and gives of [[gas]]es that make bubbles inside making it look like a sponge.
|}