Question

SUMMATIVE ASSESSMENT
Tick (/) the most appropriate answer.
1. Which of the following is not an agent of physical weathering?
(a) Wind
(b) Temperature
(c) Water
(d) Moon
2. Which one of these cannot be blamed for soil erosion?
(a) Overgrazing
(b) Deforestation
(c) Excessive ploughing (d) Step farming
3. In the soil profile, the lowest horizon is of
(a) subsoil
(b) bedrock
(c) gravel
(d) humus
4. Cotton grows well in
(a) clayey soil
(b) sandy soil
(c) loamy soil
(d) None of these
5. Which soil can retain more water?
(a) Sandy soil
(b) Clayey soil
(c) Loamy soil (d) Mixture of these soils
6. Which of these soil particles contains the smallest rock particles?
(a) Silt
(b) Clay
(c) Sand
(d) All contain equal sized particles
7. The darkest layer of soil is
(a) subsoil
(b) bedrock
(c) C-horizon
(d) topsoil
8. Humus is important because
(a) it improves the water holding capacity of the soil
(b) it sticks rock particles together so that they do not get washed away
(c) it makes the soil fertile
(d) All of these​

Answer 1

Answer:

1) Moon

2)Step farming

3)bed rock

4)clayey soil

5)Clayey soil

6)clay

7)C - Horizon

8)All' the above

Answer 2

Answer:

1) d moon

2)d step farming

3) b bedrock

4)d none of these

5)b clayey

6)c sand

7)d topsoil

8)c it makes soil fertile