Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Title and Hypotheses |
“To investigate the changes of the River Glaven, in NorthNorfolk, and how it changes as you go further downstream” The depth of the channel will increase The Velocity will increase The gradient will decrease The bedload is smoother upstream (FALSE) Simple Measurable Achievable Realistic Timed] ALL ONE IDEA DONT USE MORE THAN ONCE |
|
|
Features of a good hypothesis |
Suitable scale Readily researchable Clearly defined Clear geographical nature Based upon wider geographical ideas, theories, concepts etc. Clear aim |
|
|
Pilot survey |
We didnt due to centre Adv - Can adapt to survey results Improves safety Ensures we get data Study measuring and methods
Takes up time and resources |
|
|
River Glaven |
We had 12 a-level investigators over a weekend at Kingwood Overstrand, a specialist centre |
|
|
Sites |
Upper - Edgefield woods Middle - Woodland dipping platform Middle - Meander Lower - Glandford ford |
|
|
Stage 2 - Sampling methods |
Random - random number tables select sample. Adv. Statistically sound. Disadv. Same item could be picked twice, easy to miss things. (float time) - not representative Stratified - Takes account of underlying patterns and ensures all are sampled. Not statistically sound and is biased (flow velocity) - not representative Systematic - Item selected at regular intervals. Easy&Quick v Biased not stat. sound. (depth and bedload size/shape) - not representative Pragmatic - Samples where you can access and patterns can be observed. Safe and realistic v not fair, not stat. sound (Tree in way so had to move line sampling) - not representative IF SAMPLING COMES UP IS IT REPRESENTATIVE related to other factors |
|
|
Sample Type |
Sample Type - Line or Linear - Transect/line along a river - Depth Point - list of coordinates/ separate points chosen -Along the river Area - predefined area - - didn’t use Sample Size - Larger = more representative and accurate Sample Size equation to calculate size needed for accuracy = SE% = root square of PQ/N |
|
|
Primary v Secondary Data |
Primary - Time and location must be evaluated
Planning must be evaluated + how reliable is data - how can its reliability be improved Could carry out a pilot survey Secondary - Data should add comparison over time and space Who calculated and analysed the data? Is it up to date? Is it accurate? What methods were used? |
|
|
Secondary data we used |
Sec. data from: Textbooks Specialist centre Maps Internet resources Bradshaw model - (this is common sense as to whether it’ll get deeper, faster etc.) Tests proved the theories learnt |
|
|
Time |
Feedback loop can be used TImeline estimated it would take us 92 minutes Feedback loop can adapt to suit improvements in measurements (first site takes longer than last) |
|
|
Stage 3 - Methodology Accuracy and reliability |
Table headings - Method / Equipment / Limitations / Improvements / Sampling strategy Example - Width/ 10m measuring tape, metre stick, recording sheets / Human error, measuring tape placed incorrectly / Use a stronger tape with clearer measurements, ensure measuring tape placed reliably if bank not doable / Pragmatic + Systematic Accuracy v reliability It can be inaccurate due to equipment but it could be inaccurate and still reliable. |
|
|
GIS |
Advantages - Copes with a large amount and variety of data Covers large areas Easily changeable data and scale Fast efficient, and updatable DIsadvantages - Expensive Requires technology not available in our school Doesn’t analyse or interpret Hides inequalities Can be misused - easily misrepresented Three uses - Stage 3 - collecting data - used in the field to collect and locate data - we didn’t use Stage 4 - Presenting data - mapping data and integrating various data types. - we used graphs to present data Stage 5 - Analysing and interpreting data Increases ability to ask questions + select specific parts - we mapped it onto a map to make analysis easier WE USED AEGIS |
|
|
Risk Assessment |
Table headings - Hazard/Risk - Likelihood (1-5) - Severity (1-5) - Total Risk (LxS) - Management Include Data loss in risk assessment |
|
|
Results |
Woodland dipping platform - Width - 5.7m Wetted Perimeter - 6.8m Gradient - -(minus) 1 Meander - Width - 5.4 Wetted Perimeter -5.1 Gradient - -(minus) 3 Ford - Width - 27m Wetted Perimeter - 27.5 Gradient - 2 |
