Soil Worksheet-4

Soil Worksheet-4

Multiple-Choice Question:

31. The type of mass movement characterized by the slow downhill movement of soil is called:

(A) earth flow      (B) creep              (C) slip                 (D) mudflow

32. Which sequences of processes are in the correct order?

(A) erosion, transportation, weathering

(B) weathering, erosion, transportation

(C) erosion, weathering, transportation

(D) All of these processes occur at the same time

33. Which soil conservation practice makes extensive use of farm machinery, herbicides and pesticides, and minimum tilling?

(A) conservation tillage                  (B) crop rotation

(C) windbreaks                                 (D) terracing

34. ‘A’ horizon is most likely deepest in this ecosystem.

(A) grassland       (B) forest             (C) tundra            (D) desert

35. Which part of the soil profile contains relatively few organisms and organic material, but also has an accumulation of leached nutrients?

(A) B horizon                                    (B) D horizon

(C) A horizon                                    (D) C horizon

36. The most friable (easily broken into small fragments) soil is:

(A) clay                (B) loam               (C) sand               (D) none of these

37. The best type of soil for agriculture is:

(A) silt                  (B) loam               (C) sand               (D) clay

38. Which of the following characteristics is not a property of humus in soil?

(A) It raises pH                                 (B) It provides nutrients                 

(C) It helps to aerate soil                (D) It retains moisture

39. Which of the following is a mixture of decomposed organic matter and is usually dark in colour?

 (A) Humus (B) Clay                (C) Sand               (D) Loam

40. Which of the following describes hygroscopic water?

(A) Water which represents the majority availability for plant uptake

(B) Water which is held as a tight film around individual soil particles and is unavailable to plants

(C) Water which ponds up on the soil surface

(D) Water which is available to drain through the soil by gravity

Answer Key:

31. (B)
32. (B)
33. (A)
34. (A)
35. (A)
36. (C)
37. (B)
38. (A)
39. (A)
40. (B)