Geography 3 Flashcards
Types of data collection
Questionnaire/Interview
* Environmental quality survey(not just “survey”)
* Housing type/quality/price.
* Photograph
How anomalies can affect enquiry
Gives data that doesn’t fit with the rest of the pattern (1) that can lead to
inaccurate results (d)(1)
Gives irregular data (1) that can impact on the conclusions drawn (d)(1)
Use of photos
To compare different sites (1) to show differences/similarities/changes at
each site (1) which link back to the original aim/theory of the enquiry (d)(1)
Use of maps
To show the location of the enquiry (1) which gives a clear visual
presentation of the site(s) used (1) and their inter-relationship (d)(1).
Use of field sketch
Quick way of getting information (1) which records accurate details (1) that
can /quickly/easily be referred back to (d)(1).
Data collection methods
Cork - velocity
Peebles and match to power scale
Record depth of river every 25cm
How did we measure Velocity
Drop cork into middle of river and record how long it takes (seconds) to travel 10m repeat 5 times and calculate average speed. We did this to see if management of the river had impacted the velocity of the river across the course
How did we measure the rivers bedload
We looked a pebbles we sampled and matched it to the power scale of roundness. 5 samples were taken from each site and recorded. We did this because we wanted to see if the management of the river had impacted rates of erosion across the course of the river
How did we measure the river profile
Every 25cm the depth of the river was recorded. We did this because we wanted to see if the management of the river had impacted the cross profile of the river.
What was our sampling method
Stratified sampling as it involves the researchers carefully picking and choosing each part of the sample. Want to have a representation of each course of the river
Sample size
3 sites , repeated 5 times and an average calculated
Secondary data
Photos of the river from the past the national trust has would let us see how the river and surrounding area has changed and how this might have impacted the natural processes of the river
What were our data presentation methods
Line Graph, Scatter Graph and cross section of the river
Line Graph
A line graph was used to show how the velocity has changed across the three sites. This was good as the steepness of line gives us a visual representation to see if the velocity has changed. The steeper the line the greater the change and we could calculate the difference along the courses
Scatter Graph
Scatter graph with a line of best fit was used to show the shape and size of the river bedload. This allowed us to see if there if there is a correlation between the size of the load and the roundness. We found a negative correlation. And we could see the most common roundness
