Igneous rock, fine-grained and almost black in colour
Light grey or pinkish, coarse-grained, igneous rock
Sedimentary rock made up of compressed and carbonised plant material
A body of igneous rock that cooled and crystallised from magma deep underground
Layer of hot, dense rock deep beneath the surface
Bubbles formed by volcanic gases in lava, that become "frozen in" as the lava cools
Process of changing rocks through heat and/or pressure
Any trace of past life preserved in a rock
Materials are worn away and transported by natural forces such as wind or water
Slow breakdown of rock at the Earth's surface, due to climatic and biological processes
Resistance to flow of a magma
Process where sediment grains become squashed closer together during burial
Hollow or depression sometimes caused by meteor impacts
A process where iron-rich minerals react with air to form rusty-brown oxides
Basalt
Coal
Compaction
Crater
Crust
Erosion
Fossil
Granite
Intrusion
Mantle
Metamorphism
Oxidation
Vesicle
Viscosity
Weathering
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