physical methods 9 marker Flashcards
What was the advantage of measuring sand height at the groynes?
Using a metal ruler held vertically allowed for accurate and precise measurements in cm to 1dp.
What was a disadvantage of measuring sand height at the groynes?
It was hard to judge where to measure from due to uneven top levels and potential operator error in holding the ruler vertical.
How helpful was the sand height measurement in reaching valid conclusions?
It was very helpful as it indicated the effectiveness of management, but inaccurate readings could lead to false assumptions about sand trapping.
What was the advantage of the orange drift test?
The orange visually demonstrated movement with swash and backwash, indicating longshore drift (LSD) was occurring.
What was a disadvantage of the orange drift test?
The measurement was not precise as it relied on visual estimation, and sometimes the orange did not move due to weak conditions.
How helpful was the orange drift test in reaching valid conclusions?
It was quite helpful for assessing groyne effectiveness, but short distances or no movement could lead to unreliable conclusions.
What was the advantage of the property quality survey?
The scoring system from 1-5 was easy to understand, indicating whether property quality was poor or high.
What was a disadvantage of the property quality survey?
The survey was subjective, leading to inconsistent judgements between different group members and properties.
How helpful was the property quality survey in reaching valid conclusions?
It provided a wider view of public trust in management effectiveness, but it was less useful and potentially untrustworthy compared to other methods.
What was the overall conclusion about the validity of the methods used?
I felt confident in the validity of my conclusions based on three pieces of evidence: groyne measurements, orange drift surveys, and property surveys.
