So Study:- (1) Write the different ways by which we can purify water
at home?
[2] What are the advantage and disadvantage of dames?
[3] Make a list of metallic and non metallic minerals and write
one-one uses of each of them?
[4] Collect some information about Chipko movement.
Answers
Answer:
1) We can purify the water at home by boiling it.
Explanation:
Boiling. The simplest and most common method to purify drinking water is to boil it. ...
Commercial Filters. There are quite a few ways to filter water for safe drinking. ...
Slow Sand Filtration. ...
Bleach. ...
Liquid Iodine and Iodine Tablets. ...
Non-Chemical Stabilized Oxygen. ...
Solar Disinfection. ...
Ultraviolet Light
2: Some Advantages of Dams are:
Water Stored in dams are used for irrigation.
Generation of electricity from the water released through dams.
Renewable source of energy. Whenever electricity needed it can generated from the stored water.
No pollution occurs during generation of electricity. Clean source of energy.
Hydroelectricity produced by dams does not produce any waste product.
The hydroelectricity powerplants are long lasting and maintenance cost is low compared to others.
Flood control by holding water.
Supply of water to less rainfall areas.
Picnic spot (Boating) etc.
Some Disadvantages of Dams are:
The cost of construction is very high.
Sometimes takes dacades for construction of dams.
High standard materials are required to built dams.
Regular maintenance of dams is necessary.
Relocation of people living in the surrounding areas of dams. Hence loss of farms and land.
The flow of river water is disturbed and may disturb the habitat of wild life.
Risk of flood if dams break by earthquake.
3:Difference Between Metallic and Non-metallic Minerals
Last updated on December 29, 2017 by Surbhi S
metallic mineralsMinerals are defined as the homogeneous substances that occur naturally under varying conditions, in different types of geological environment. It is broadly classified into two categories, i.e. metallic minerals and non-metallic minerals. Metallic Minerals is composed of metals in their original form, whereas no metals are found in non-metallic minerals.
Minerals possess a definite chemical structure, and their identification is based on their physical properties. The place where minerals are found is called an ore. Ores are the concentration of any mineral with other elements, found in a particular area, in the form of rocks. The extraction of minerals can be done by mining, drilling and quarrying.
This article will help you understand the substantial differences between metallic and non-metallic minerals.
Content: Metallic Minerals Vs Non-metallic Minerals
Comparison Chart
Definition
Key Differences
Conclusion
Comparison Chart
BASIS FOR COMPARISON METALLIC MINERALS NON-METALLIC MINERALS
Meaning Metallic minerals refers to the minerals that comprise of metals in raw form. Non-metallic minerals implies the minerals, that do not have minerals in them.
Found in Igneous and metamorphic rocks Sedimentary rocks
New product New product can be obtained from it, on melting. No new product is obtained from it, on melting.
Heat and electricity Good conductors of heat and electricity Good insulators of heat and electricity
Malleability and ductility These are malleable and ductile. These lack in malleability and ductility.
Luster They have luster They do not have luster
4:The Chipko movement, or Chipko Andolan, was a forest conservation movement in India. It began in 1970s in Uttarakhand, then a part of Uttar Pradesh(at the foothills of Himalayas) and went on to become a rallying point for many future environmental movements all over the world.
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