Section A

1) Explain very briefly the following terms
a) Gutenberg discontinuity b) Conrad discontinuity
c) Chemical weathering d) spheroidal weathering

2. (i) List and discuss factors affecting rock weathering
(ii) What factors affect depositions of sediments.
(iii) Explain how flood plain and ax how lakes are formed.

Section B
3. (i) Define isogamy and isostatic adjustment
(ii) Compare the theories of semfloore spreading and continental drift.

4. (i) Discuss the causes of earthquakes
(ii) Explain the following
(a) Body waves (b) Surface waves (c) Seixmix waves

5. (i) Explain the term ‘plate tectonics'
(ii) In what three (3) ways do we have plate motion
(iii) Briefly explain what happens at the convergent boundary.