Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter

    Hi, I'm currently doing the controlled assessment for the AQA A Geography exam board, and my controlled assessment is based on the changes of a river in its long profile. The key terms we're investigating are vertical erosion, velocity and lateral erosion. In the introduction we're supposed to come up with a hypothesis as to how these variable change downstream. My current hypothesis is:
    Vertical erosion and lateral erosion will both increase downstream but lateral erosion will increase at a higher rate and be more prominent downstream as the river velocity increases due to tributaries, increasing discharge thus velocity, which increases lateral erosion due to the increased kinetic energy. Velocity will increase downstream due to tributaries, increasing discharge.

    I'm not sure exactly why lateral erosion increases due to an increase in velocity, but is that hypothesis good enough? Also, for the evaluation, do we need to just list the limitations of the method, or do we actually need to explain how we can overcome those limitations?

What's the best type of cheese?
Useful resources

Study tools


Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.


Make study resources

Create all the resources you need to get the grades.


Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.


Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.