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Mass movement:

Fig.1 The diagram above shows classification of mass movement according to water content and

velocity.

1. (a) State water content and velocity associated by each types of mass movement.MASS MOVEMENT WATER CONTENT VELOCITY

a) Soil creep Low Between 0.1mm/ year and

1cm/ yr

b) Solifluction High Between 1mm/yr and

1mm/dayc) Debris slide High

d) Rock slide Low

e) Debris flow High

f) Rock fall Low

b. Describe any two types of mass movement and under what conditions they occur.c. Describe soil creep and solifluctionand explain why they occur at low velocities.

2. (a) Identify the type of mass movement in Fig 2a and 2b. (2)

(b) Describe how each of the mass movements in fig 2a and 2b occur and describe their

effect of slopes. (8)

Fig 2a Fig 2b

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