Cavities in the Earths surface, resultant of collisions between an asteroid or meteorite
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Tag: <span>I</span>
A common ore of titanium
The simplest of the 3 main rock types which includes sedimentary and metamorphic, igneous rocks are formed immediately upon the cooling of molten material
Minerals whose colour is influenced by their primary constituent
When a substance is caused to ignite a spark or flame, through chemical or mechanical reaction
Where 2 or more lines meet or cut across each other
A substance that emits light when heated
Used to describe an area between mountains
Rock lacking porousness
An elevated are between to moving water bodies, such as rivers or creeks, which run parallel to each other