-40c5-bf1e-e433d0c2d36e","revisionId":"13a253da-daf3-426f-94f3-425fe058f628","questionNumber":null,"questionType":"LA","specification":"","difficulty":6,"difficultyBand":"medium","totalMarks":5,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"da5aefb0-7aef-4a7b-ab8a-7c753c7ea616","label":null,"content":"Suggest one way that a microclimate survey (measuring wind speed and air temperature) could be adapted in order to improve the reliability of the results.","markscheme":"- Suggests temporal replication, e.g. repeating measurements at different times of day to account for diurnal changes and calculating an average B1\n- Suggests seasonal/weather replication, e.g. conducting the survey on different days or in different seasons to get a more representative average B1\n- Suggests upgrading equipment, e.g. using digital anemometers or thermometers to reduce reading errors B1\n- Suggests spatial sampling, e.g. increasing the number of sample sites to ensure wider, more representative coverage B1\n- Suggests standardising techniques / group coordination, e.g. holding the thermometer at a standardised height (e.g. 1m) out of direct sunlight B1","marks":5,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"standardise_measurements","label":"Standardise the survey","steps":[{"type":"text","order":1,"title":"Standardise the readings","content":"Measure air temperature with the thermometer held at the **same height** at every site (for example, $1\\text{ m}$) and keep it out of direct sunlight. Reliability means getting consistent results when the survey is repeated, so this reduces differences caused by the way each group member takes a reading.\n\n**B1:** standardising the thermometer height and keeping it out of direct sunlight makes measurements more consistent.","highlights":[{"text":"measuring wind speed and air temperature","location":"specification"},{"text":"improve the reliability of the results","location":"specification"}]}]}],"generatedAt":"2026-07-21T03:15:10.582Z","modelVersion":"gpt-5.6-terra","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"03fe61e5-3ee9-4f14-b910-cea7d6a20c32","revisionId":"cdb0f1f4-2816-4442-93fa-96146373ea86","questionNumber":null,"questionType":"LA","specification":"","difficulty":5,"difficultyBand":"medium","totalMarks":5,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"776112b2-b0e9-4770-a5ce-35c4d8551fb5","label":null,"content":"Suggest **two** ways that a student investigating downstream changes in river discharge could adapt their float-method velocity measurements to ensure the velocity data is more reliable.","markscheme":"- Suggests repeating the float test multiple times (e.g., 3 to 5 times) at each site and calculating a mean to reduce the impact of timing errors B1\n- Suggests using a standardized, partially submerged float (such as an orange) rather than a light object (like a leaf or twig) to prevent wind interference and surface tension effects B1\n- Suggests measuring velocity at multiple points across the channel cross-section (e.g., left bank, middle, right bank) and taking an average to account for varying friction and lateral velocity profile B1\n- Suggests increasing the distance of the test run to reduce the percentage error caused by human reaction time when starting and stopping the stopwatch B1\n- Suggests replacing the float method with a digital flow meter (impeller) to eliminate human timing errors entirely B1","marks":5,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"improve_float_reliability","label":"Improve the float method","steps":[{"type":"text","order":0,"title":"Target reliability","content":"Choose adaptations that make repeated measurements **consistent**. Reliability means that random errors, such as an uneven stopwatch reaction time or a gust of wind, have less effect on the final velocity result.","highligh

Fieldwork

Question 1

Fieldwork Questions

Fieldwork

Question 1

Fieldwork Questions