Tuesday, 2 July 2013

ch 3 geo class 8

Question and answers



Answer the following questions.
(i) Name any three common minerals used by you everyday.
(ii) What is an ore? Where are the ores of metallic minerals generally located?
(iii) Name two regions rich in natural gas resources.
(iv) Which sources of energy would you suggest for
(a) Rural areas
(b) Coastal areas
(c) Arid regions
(v) Give five ways in which you can save energy at home.


(i) Three common minerals used every day:
(a) Copper − Electric wires
(b) Talc − Talcum powder
(c) Lead − Batteries
(ii) Ores are the rocks from which minerals are mined. The ores of metallic minerals are generally found in igneous and metamorphic rock formations that form large plateaus.
(iii) Russia and the United Kingdom are the two regions rich in natural gas resources.
(iv)
(a) Biogas energy for rural areas
(b) Hydel and tidal energy for coastal areas
(c) Wind and solar energy for arid regions
(v) Five ways in which energy can be saved at home:
(a) Switching off lights, fans and other electrical appliances when not in use
(b) By seeing to it that electrical devices are operating efficiently; for example, defrosting refrigerator regularly and not keeping the refrigerator door open for longer than necessary
(c) Using energy-efficient devices such as fluorescent bulbs and tubes
(d) Using energy efficiently while cooking; for example, keeping the lids of pans on while cooking
(e) Unplugging electrical devices when not in use prevents leakage of electricity; thus saving energy

4 comments:

  1. thanks it helped me a lot

    ReplyDelete
  2. TY Harsh! But you could have posted answers of - MCQ,Give Reasons and Distinguish also.. Nyway, TY! <3 :*

    ReplyDelete
  3. This comment has been removed by a blog administrator.

    ReplyDelete
  4. This comment has been removed by a blog administrator.

    ReplyDelete

Breaking