1. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Q1 Answer the following questions in brief.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

2. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
1. What is meant by non-renewable energy sources? Give their examples.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

3. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Ans. When the energy of any source of energy is used then naturally if the energy of that source is not available
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

4. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
For use in near future that source of energy is called non-renewable energy source.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

5. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Mineral coal , natural gas and petroleum products are example of it.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

6. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
2. What is meant by renewable energy source ? Give its examples.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

7. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Ans. When the energy of any source of energy used then naturally if the
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

8. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Energy of that source is available for use in near future then , that source of energy
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

9. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Is called renewable energy source. Wind energy , hydro energy , solar energy , Geo-
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

10. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Thermal energy, Bio- mass energy are example of it.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

11. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
3. State the characteristics of non renewable energy sources.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

12. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Ans.1. his source of energy decreases
2. The use of this energy source increases pollution.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

13. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
3. This energy source is under the ownership of an individual, a particular group or a country.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

14. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
4. State the characteristic of renewable energy sources.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

15. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Page no. 88
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

16. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
5. State how the mineral coal is produced and write its uses.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

17. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Page no State four remedies to save energy.
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3

18. GAJWANI SCHOOLS & COLLEGES
Sources of energy.
Page no97
GAJWANI SCHOOLS & COLLEGES
CH 9 STD 7 SCIENCE SEM 1 WEEK 2 DAY 3