Water, Landforms & People Exam Revision: Use pgs 20-39 & your classwork to fill in the gaps. Answer the questions on pg 40. Location: Grand Canyon, Colorado River, USA What does the case study show? A landform created by erosion of a river How a landform affects people living in an area. How people affect a landform How people use a landform How the Grand Canyon was created: The Grand Canyon is 10 miles long, 1 mile deep and 180 miles long. It was formed by the interaction of climate, geology and the river Colorado. 1. Climate – little rainfall in the area creates few tributaries so the surface around the Canyon is flat. 2. Geology – Hard, resistant rocks stick out into the Canyon, making it hard for sideways (lateral) erosion to take place. The Earth underneath the Canyon is being pushed up, so the wide and powerful Colorado River erodes downwards (vertical erosion). This keeps the Canyon narrow and deep. 3. River – This erodes the bottom of the Canyon by attrition, hydraulic action, corrasion and corrosion. How People Use the Canyon: 5 million tourists visit the Canyon each year, bringing $millions to the local economy. People visit because of the natural beauty and wildlife of an area: They camp and picnic. They hike. They go on mule trips. They fish and hunt. They have meals in restaurants in the Canyon park. They go on helicopter/balloon rides over the Canyon. How the Canyon affects People Living Nearby: It provides jobs in tourism and has a positive multiplier effect as people stay in nearby hotels, eat in restaurants etc. Tourists who come by car cause traffic jams, noise pollution and atmospheric pollution. How People Affect the Canyon: Many animals have been hunted & fished to extinction. Footpath erosion is taking place changing the appearance of the Canyon. Many rocks are stolen. The peace and tranquillity of the area has been ruined by too many visitors and too much traffic. How can we manage the problems? You can only fish or hunt with a licence. You must book mule treks a year in advance due to limits on the number of treks each year. The Canyon has been made a World Heritage Site so stealing rocks is illegal. A park and ride system has been introduced to keep cars out of the park. More car parks are being built out of the park. More bike and hiking trails have been built. Water, Landforms & People Exam Revision: Use pgs 20-39 & your classwork to fill in the gaps. Answer the questions on pg 40. Draw the hydrological cycle with its inputs, flows, stores & outputs: Draw a drainage basin with its important features: Describe the water supply problems that LEDCs have: How can LEDCs solve their water supply problems? Where is water demand in the UK growing? What do water authorities do? How are drainage basins used? Where & why gets the most water in the UK? What opinions are there about water management?