Minerals and power resources ,geography chapter 3 / CBSC Class 8 NOTES
Question 1- name any e three common minerals used by you everyday?
Answer- the minerals used in in our daily life are -: Salts, iron, copper etc.
Question 2- tu what is an ore ? Where are the the ores of metallic minerals generally located?
Answer – an ore is a row form of minerals are found in a a given rock. The ores of metallic minerals are are found in hard- rock under the contain minimum quantity of that mineral. So that it can be e interacted.
Question 3- name two regions which in natural gas resources.
Answer- the regions which are rich this Reserves of natural gas resource are
1- russiya, uk, and Norway in Europe.
2- jaisalmer, krishna Godavari besan and digboi reason in India.
Question 4- which sources of energy would you suggest for rural areas?
Answer- rural areas-
1- biogas energy and solar energy for rural areas.
(b) coastal areas.
– hydel and tidal, wind energy for coastal areas.
(c) arid areas
– wind and solar energy for arid areas.
Question 5- give five ways in in which you can save energy at home?
Answer- five ways in which energy can be saved at home
1- switching off lights, fans and other electrical items when not they are not in use.
2- by seeing that electrical device are operating efficiently.
3- using LED bulbs, tubelight, tV and computer monitor.
4- cooking goods in in pressure cookers and keeping the lids of pens: Cooking.
5- unplugging electrical device when not in use.
Question 6- environment aspects must be carefully looked into before building huge dams?
Answer- it is because:-
1- dance create in balance in the earth equilibrium.
2- deforestation leads to environmental pollution.
3- people become displaced. It it require shifting causing lot of hard shapes.
4- it traits of flood and earthquake.
Question 7 difference between conventional and non conventional source of energy?
1- have been common
2- are generally it enhavstible.
3- are mostly polluting.
4- example – coal, fire ,wood.
1- are not conventionally used.
2- are generally in Alhashtable.
3- are mostly non-polluting.
4- example – solar energy, nuclear energy.
Question 8- difference between biogas and natural gas?
1- formed using organic waste sach and dead plant and animal matter, animal dung and Kitchen waste.
2- is a non conventional source of energy.
3- if easily available
1- found along with petroleum deposits and get released when curd oil is is what to the surface.
2- if a conventional source of energy.
3- not easily available very few containers have sufficient to natural gas reserves of there own.
4- is a cleaner fuel.
5- used as domestic fuel as wall as industrial fuel. Biogas messenger
Question 9- difference between ferrous and non-ferrous?
1- a metallic minerals that contain iron.
Example:- iron ore
1- a metallic minerals that does not contain. Example gold ,silver.
Question 10- what is the different between metallic and nonmetallic?
1- are minerals containing metal in a form.
2- they are hard substance that conduct heat and electricity.
3- they have lustre.
4- iron ore, bauxite,manganese are the example of metallic.
1- A minerals not containing metal.
2- they are soft and cannot conduct heat and electricity.
3- they do not have lustre.
4- limestone, coal and petroleum are the example of non metallic.