Presentation on theme: "How Waterfalls Change Over Time"— Presentation transcript:
1 How Waterfalls Change Over Time Lesson 5 – page 6
2 Lesson Aims To learn that waterfalls change over time. To learn that waterfalls retreat backwards.To learn that when a waterfall retreats a gorge is formed.To learn that Sipi falls brings benefits as a tourist attraction.Key Skill = Communication
6 Activity – Draw and annotate the sketches 1467253The hard rock forms a lip.The waterfall retreats backwards leaving a gorge.Hard rock overlies soft rock.Erosion of the plunge pool causes undercutting.The soft rock is eroded to form a deep plunge pool.The undercut lip collapses into the plunge pool.Soft rock beneath the hard rock is more easily eroded.
7 Case study Sipi Falls, Uganda What benefits do Sipi Falls bring to local people?
8 Explain the employment terms: Extension ActivityExplain the employment terms:Formal SectorInformal Sector.