a) State three ways in which the earth’s crust is affected by the earthquakes(b) State two evidences of continental drift theory(c) Name three types of plate tectonic boundaries
Answer Text: a) - earthquakes causes lateral and vertical displacement of rocks-they cause raising and lowering of parts of the sea floor and coastal regions- it causes landslides- it leads to faulting of the crust- they lead to volcanic eruptionsb) - The jig saw fit of continental margins e.g. Southern Africa and Southern America- Spreading of the ocean floor- rocks are younger at the oceanic trenches and youngeroutwards- Geological evidence i.e. the rock structure in some continents are similar e.g. South Africa and South America meaning that they were together- Palaeo-climatic evidence, similar fossils/ remains have been found in different continentsc) - Extension boundary/ divergence - where two plates are moving apart.- convergent boundary- two plates are colliding- Transform boundary – two plates slide past each other
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