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Geograpgy glendun river

Extracts from this document...

Introduction

Contents Page 1 Front cover Page 30 Location - map showing bed load distribution Page 2 Contents Page 31 Evaluation Page 3 Section 1 - Applied understanding Page 32 Evaluation Page 4 Location Page 33 Evaluation Page 5 Location - map Page 34 Evaluation Page 6 Theory - Ideal stream Page 35 conclusion Page 7 Ideal stream table Page 36 Bibliography Page 8 We should expect to find at: Upper course Page 37 Appendix Page 9 Middle course Page 10 Lower course Page 11 Glossary Page 12 Glossary Page 13 Methodology Page 14 Equipment used Page 15 Data table Page 16 A comprehensive range of techniques Page 17 A comprehensive range of techniques Page 18 Originality Page 19 Results and analysis - Hypothesis 1 Page 21 Results and analysis - Hypothesis 1 Page 22 Results and analysis - Hypothesis 1 Page 23 Results and analysis - Hypothesis 1 Page 24 Results and analysis - Hypothesis 1&2 Page 25 Hypothesis 2 Page 26 Hypothesis 3 Page 27 Hypothesis 3 Page 28 Conclusion Page 29 Originality GCSE Geography Coursework Section 1 - Applied understanding Why? We are doing this study to test all the text book theories. It brings all the ideas that we read in a book to real life, we can see exactly what happens for ourselves we get the chance to record the results ourselves also this is a requirement for our geography GCSE and the study is worth 25% of our ultimate GCSE mark. Aims To describe and attempt to explain how the characteristics of the Glendun River vary from source to mouth. We plan to collect a number of samples at five different stages of the river and investigate how they vary. Objectives To compare the characteristics of an actual river with a textbook river and to collect primary data, this actually gives us the figures ourselves instead of copying out of the text book without actually truly knowing how the samples were collected or how they were analysed. ...read more.

Middle

This was probably one of are most inaccurate results as it was more of an estimate. pH level We used empty water bottles and collected water samples at each site and then analysed each sample for pH levels, to establish if pH changes over the course of the river. Bed load We collected a random sample of ten rocks from the bottom of the river at each site. We used a roundness index card to identify their shape. We also measured the longest axis and size of the rocks, to establish the size in mm, we would expect to find that the bed load got smaller and more rounded as you go towards to mouth. Internal and external friction This was also measured at each of the five sites. External friction was measured using a friction index card to access bank and bed friction, internal friction was used to measure turbulence. Each was rated on a scale of 1 to 5 depending on the level of friction. Originality For my originality I am going to deal with the pH levels of the water. To do this I am going to take the water samples we collected from each site and analyse them in the science department to test the pH levels. How to test for pH: Use Universal test paper Dip the test paper into the water sample and remove Compare colour change to colour chart to determine pH level pH levels vary from pH 1 (very acidic) to pH 7 (neutral) to pH 11 (very alkaline) My prediction In up land areas there is more relief rainfall. Rainfall is slightly acidic therefore upland areas receive more acidic rain. In upland areas vegetation decomposition is limited due to cold conditions. Organic acids are released into the soil. Water passes through this soil on its way to the river, therefore it picks up acidic qualities. ...read more.

Conclusion

Depending on where across the stream width you looked I think it could have been perceived in many ways. E.g. Looking at the river after it smashes a large boulder is certainly going to look different then 1m across the river where it flows as normal Bed load size and shape Reliability of method I think that this method was reliable although could have been improved, taking only 10 rocks from the river may have gave a slightly bias results, although time consuming I think taking around 20 would have given better results. Accuracy of results I don't think the results for bed load I obtained were very accurate, looking at the graph you can seen that there were some sites which stood out from the rest. This may just have been the luck of picking the rocks but I think taking a bigger sample would have solved this problem. Conclusion Hypothesis 1, stream width, this was proved through my results as it gradually increased from mouth to source. Stream depth however it did not follow the hypothesis, the inaccurate results may be down to inaccurate readings or large boulders at the intervals. As you can see from the graph the Cross-sectional area also increased from mouth to source proving that part of the hypothesis. I think this hypothesis worked out well except stream depth which I think was just down to large boulders at intervals, I would like to take this reading again but I think in doing that all of the hypothesis would be proved. Hypothesis 2, velocity and discharge will increase from mouth to source, neither of these things happened both results varied considerably and were not at all consistent I think poor measurement skills were to blame. Hypothesis 3, bed load becomes smaller and more rounded from source to mouth. In the most part this was true; gradually the rocks did become more rounded and smaller proving this hypothesis. Overall I think this study helped as it gave us a realistic idea of what it's actually like to take and record measurements. ...read more.

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