Grade 11 Environmental science practice

What is on the worksheet

1. Uniform rainfall of 68 mm falls on 9 hectares. In a simplified model, 0.2 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

2. Uniform rainfall of 117 mm falls on 33 hectares. In a simplified model, 0.9 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

3. Uniform rainfall of 77 mm falls on 20 hectares. In a simplified model, 0.1 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

4. Which is a flow unit?

   1. A calendar date
   2. Tonnes only
   3. Metres only
   4. Tonnes per year

5. Uniform rainfall of 31 mm falls on 33 hectares. In a simplified model, 0.2 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

6. Why should transport and disposal sometimes be included in a comparison?

7. Uniform rainfall of 20 mm falls on 35 hectares. In a simplified model, 0.5 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

8. Uniform rainfall of 121 mm falls on 31 hectares. In a simplified model, 0.4 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

9. Uniform rainfall of 133 mm falls on 30 hectares. In a simplified model, 0.4 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

10. Uniform rainfall of 23 mm falls on 1 hectares. In a simplified model, 0.1 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

11. Uniform rainfall of 97 mm falls on 31 hectares. In a simplified model, 0.6 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

12. Uniform rainfall of 104 mm falls on 38 hectares. In a simplified model, 0.9 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

13. Uniform rainfall of 148 mm falls on 29 hectares. In a simplified model, 0.1 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

14. Uniform rainfall of 61 mm falls on 2 hectares. In a simplified model, 0.9 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

15. Uniform rainfall of 62 mm falls on 13 hectares. In a simplified model, 0.7 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

16. Uniform rainfall of 13 mm falls on 21 hectares. In a simplified model, 0.4 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

17. Uniform rainfall of 63 mm falls on 60 hectares. In a simplified model, 0.2 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

18. Uniform rainfall of 136 mm falls on 39 hectares. In a simplified model, 0.3 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

19. Uniform rainfall of 119 mm falls on 50 hectares. In a simplified model, 0.1 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.

20. Uniform rainfall of 132 mm falls on 40 hectares. In a simplified model, 0.5 of the rain becomes runoff. Find runoff volume in m³. Round the final result to 4 decimal places if needed. Answer in m³.