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The use of a rock will depend upon its ________.
Rocks are made up of different ______ that fit together.
The chemicals in the rocks are called minerals.
Rocks are a _______ of different minerals.
The _______ of the rock is a combination of the sizes and shapes of the grains.
When the grains in rocks all fit together with no gaps they are ____________.
___________ rocks form when existing rocks are heated and squashed together.
_______ rocks form when molten (liquid) rock cools down.
Most ___________ rocks are formed when tiny grains of existing rock become stuck together.
______ rocks have tiny holes in them and they can absorb water.