What is igneous rock?
(b) states three characteristics of igneous rocks
(c) Explain five economic importance of igneous rocks.
(a) Meaning of Igneous Rock
It is a type of rock formed from the cooling and solidification of molten magma.
(b) Characteristics of igneous rocks
- non-stratified - crystalline
- not contain fossils
- usually hard
- Impervious/compact
- some are jointed
- either acidic or basic
(c) Economic importance of igneous rock
- source of energy (nuclear and geothermal energy)
- soil formation
- source of minerals
- tourist attraction
- source of raw materials for industries
- as ornamental
- for construction purposes
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