_____ are any natural, inorganic material made up of minerals.
Rocks
15
Some rocks are made of a single substance. They are called ______ rocks.
Monomineralic
15
_____ rocks are formed from cooled magma. Magma is molten rocky material below the Earth’s surface.
Igneous rocks
15
_______ rocks are formed by the accumulation and compaction of sediment, for example, clay, sand or rock fragments.
Sedimentary rocks
15
______ rocks are formed from other rocks by the effects of heat and pressure. Forces inside the Earth cause a “parent rock” to change into another type of rock, without melting.
Metamorphic
15
______ rocks are made up of fragments of other rocks that are stuck together
Detrital
15
_____ ______rocks are made of mineral crystals from oceans, lakes and groundwater that have dissolved in water.
Chemical sedimentary
15
_____ _____ rocks are made of plant and animal remains which have been transformed into minerals
Organic sedimentary
15
______ is fomed by small grains of sand and its properties are grains break off if scratched.