Geography Unit 2
In this Geography GCSE controlled assessment project, I will be focusing on rivers and I have chosen a hypothesis to prove that erosion is making an impact on the Loughton Brook Rivers. My hypothesis is, “The river Loughton brook becomes wider and deeper due to erosion as it moves downstream”. I will be investigating if erosion takes place downstream in the river. I will investigate if hydraulic action has an impact. I will study about vertical erosion, lateral erosion, Cross profile and hydraulic action.
The geography field trip we are going to is called Loughton Brook which is located in Epping Forest. Epping Forest is the hugest public forest in London. It is almost 6000 acres and has an area of about 12 miles. Two thirds of Epping Forest is selected for scientific interest. The forest hosts various events and activities such as heritage events and seasonal events.
The range of key concepts that I will be studying is vertical erosion, hydraulic action, and lateral erosion. As the river goes downstream it will get wider due to lateral erosion. As the river goes downstream it will get deeper due to vertical erosion. To prove my theory and hypothesis that the river moves downstream the cross profile will increase in size
These are the hypothesis that I will be testing
The width of the river channel will increase with distance downstream. The depth of the river channel will increase with distance downstream. The wetted perimeter increases with distance downstream.
The bed load size will decrease with distance downstream.
The bed load shape (roundness and smoothness) should increase with distance downstream.
The cross-sectional area of the river channel increases with distance downstream.
There is a relationship between the depth and width of the river.
Key concepts-
Vertical erosion - Vertical erosion is caused by the erosive action of rivers cutting downwards. This deepens river valleys. The valley is widened by lateral erosion
The geography field trip we are going to is called Loughton Brook which is located in Epping Forest. Epping Forest is the hugest public forest in London. It is almost 6000 acres and has an area of about 12 miles. Two thirds of Epping Forest is selected for scientific interest. The forest hosts various events and activities such as heritage events and seasonal events.
The range of key concepts that I will be studying is vertical erosion, hydraulic action, and lateral erosion. As the river goes downstream it will get wider due to lateral erosion. As the river goes downstream it will get deeper due to vertical erosion. To prove my theory and hypothesis that the river moves downstream the cross profile will increase in size
These are the hypothesis that I will be testing
The width of the river channel will increase with distance downstream. The depth of the river channel will increase with distance downstream. The wetted perimeter increases with distance downstream.
The bed load size will decrease with distance downstream.
The bed load shape (roundness and smoothness) should increase with distance downstream.
The cross-sectional area of the river channel increases with distance downstream.
There is a relationship between the depth and width of the river.
Key concepts-
Vertical erosion - Vertical erosion is caused by the erosive action of rivers cutting downwards. This deepens river valleys. The valley is widened by lateral erosion