Chapter – 1
Minerals
Classwork Assignment
Took revision of Ch – 1.
Q1. Why should minerals be conserved ?
Ans – Minerals are fossil fuels that are formed over thousands of years. It is known that the world does not have an unlimited amount of minerals resources; hence , minerals need to be conserved.
Q2. What are minerals?
Ans – Minerals are substances that can be found naturally on Earth. Minerals can found under the ground and at the bottom of seas. They are of two types – metallic and non-metallic.
Q3. What metallic minerals?
Ans – Minerals like iron , copper , gold , silver , bauxite from which new substances can be produced are called metallic minerals.
Q4. What are non-metallic minerals?
Ans – Non-metallic minerals are substances from which new substances cannot be made. Coal, petroleum , natural gas , limestone , mica and precious stones are non-metallic minerals.
Q5. What are mines?
Ans- Deep and large holes are used to dig the minerals out from under the ground. These are known as mines.
Q6. Differentiate between Metallic and Non-Metallic minerals.
Ans –
Metallic Minerals |
Non-Metallic Minerals |
1. They are hard and cannot be broken easily. They can be melted to make new products. |
They are not hard and are breakable. |
2. They are mostly found in igneous rocks. |
They are mostly found in sedimentary rocks. |
3. They have a shine of their own. |
They have no shine of their own. |