Name 2 characteristics of an optical fibre that affect the performance of an optical fibre communication link and explain how the performance is affected.Briefly describe the two principal classes of sedimentary rocks and give examples. (2 points) 4. Name several possible sources of the heat or pressure that can cause metamorphism. Describe the kinds of physical changes that may occur in a rock as a result (2 points) 5. The following diagram illustrates the rock cycle. Redraw the diagram and match the processes below to the blank ovals. (Note: some processes are used more than once.) (8 points) Cementation and compaction (lithification) o Heat and pressure Weathering, transportation, deposition Cooling and solidification o Melting Magma Metamorphic rock Igneous rock 8 Sedimentary rock Sediment
