Exam code: 4GE1
Study Figure 7a which is a student’s sketch map showing the locations of three sampling sites for a river channel investigation.
Why is group work often better suited to river channel investigations than an individual working alone?
Some rivers are polluted
One person can carry the refreshments
One person can record while others use the equipment
The measuring equipment is heavy
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A group of students have undertaken a study exploring changes in a river channel every 100 metres.
Identify the type of sampling method used.
systematic
random
stratified
opportunistic
State one disadvantage of using one of the sampling methods in question (a) above.
Sampling Method.
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A group of students have undertaken a study exploring changes in a river channel.
(i)
Identify one risk that the students may identify when undertaking a risk assessment for this investigation
(1)
(ii)
State one way that this risk could be managed.
(1)
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Identify a suitable piece of equipment to measure river velocity
Anemometer
Quadrat
Clinometer
Stopwatch
Name one type of sampling method
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Describe one way GIS might be used for fieldwork in a river environment
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Name one piece of equipment the students could have used in their enquiry
State one type of sampling students could have used to choose their data collection sites
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Study Figure 4a
Identify one type of quantitative data used by students
Annotated photographs
Newspaper articles
Amount of rainfall
River management plan
State one way maps could be used to support the enquiry
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State one piece of equipment that could be used to measure river velocity
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Outline three factors that should be considered when choosing a suitable sampling site for a river channel investigation.
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To extend the river study, students were asked to use one other primary data method.
Explain one other primary data method they might have used.
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Outline each of the three following sampling methods used in geographical investigations.
random sampling
stratified sampling
systematic sampling
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Explain one fieldwork technique the students could have used to explore river channel changes
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