1. What is a mineral? Name the two main types of minerals and
2. Give two uses each of iron, copper and bauxite.
3. Name three non-conventional renewable sources of energy.
Answers
1)A solid, naturally occurring inorganic substance.
solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure, that occurs naturally in pure form.
The two types of minerals; macrominerals and trace minerals.
2) Two uses each of iron;
(i)Iron is most important metallic mineral of the modern industrial world.
(ii)It is used to manufacture steel which is used in making machines , instruments , tools etc.
Two uses of copper;
(i) It is used in electrical wires , electric motors , generators , etc. Copper is also mixed with gold for making jewellery .
(ii)Most copper is used in electrical equipment such as wiring and motors.
Two uses of bauxite;
(i)In building material and road aggregates
(ii)Bauxite is used in a lot of industries like the chemical industry, refractory, abrasive, cement, steel, and petrol industry .
3)(i)geothermal heat
(ii) wind
(iii) solar
Three examples for non-conventional renewable sources of energy.