ow":[{"id":"a29c39f7-c8ce-418a-8511-dece3b0a4471","revisionId":"6c177e4d-fff3-40ba-9926-2c648c7e7a52","questionNumber":null,"questionType":"LA","specification":"","difficulty":4,"difficultyBand":"medium","totalMarks":4,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"4cf2db32-fb25-4f3e-80c2-9e7598879402","label":null,"content":"Using Figure 5, describe the distribution of hot desert ecosystems.\n\n![Figure 5: A world map showing the global distribution of hot desert ecosystems shaded in dark grey.](https://assets.mathsgenie.co.uk/aqa-qb/f9367aae-0dcc-440c-8b6f-2f7973057e5d.png)","markscheme":"- Identifies that hot deserts are primarily located between $15^\\circ$ and $30^\\circ$ north and south of the Equator (or along the Tropics of Cancer and Capricorn) B1\n- Identifies that they are often found on the western edges/sides of continents (e.g. western Australia, southwest Africa, western South America) B1\n- Identifies that there is a large continuous band across North Africa (the Sahara) extending into the Middle East B1\n- Identifies that they are absent from equatorial regions or high latitudes B1","marks":4,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"a8f3ebac-a19a-41c7-a9ed-6d08aec8016a","revisionId":"fdab832b-b395-4d25-9ebc-b821150cd0f4","questionNumber":null,"questionType":"LA","specification":"","difficulty":4,"difficultyBand":"medium","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"2199618c-2707-42af-8951-4ce33764c255","label":null,"content":"Explain how global atmospheric circulation creates the dry conditions that determine the distribution of hot deserts.","markscheme":"- Identifies that high-pressure belts (located at approximately $30^\\circ$ north and south of the equator) are zones of descending or sinking air M1\n- Explains that this sinking air warms, meaning it can hold more moisture, which prevents condensation, cloud formation, and precipitation A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"d4e7459a-2f6e-4234-94bc-d8f206c0dde1","revisionId":"0585adf0-9a43-4871-96be-78ca2255a49f","questionNumber":null,"questionType":"LA","specification":"### The Living World\n\nStudy Figure 1, which shows a typical soil profile (an Aridisol) in a hot desert environment.\n\n![Figure 1: A scientific diagram of a hot desert soil profile showing capillary action, minimal leaching, and distinct horizons.](https://assets.mathsgenie.co.uk/aqa-qb/5674d45f-4661-401b-94fd-ab10e8777804.png)","difficulty":5,"difficultyBand":"medium","totalMarks":1,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"b682baf7-5954-47ed-88fc-bb2a9006120b","label":null,"content":"Using Figure 1, suggest one way the characteristics of this soil profile are directly affected by the hot desert climate.","markscheme":"- Suggests a valid link between climate and soil characteristics shown in Figure 1, such as:\n * High evaporation (due to high temperatures) causes upward capillary action, leaving a thin saline crust/caliche layer of soluble salts near the surface\n * Low/infrequent rainfall restricts plant growth, resulting in minimal organic matter/humus in the A horizon\n * Extreme temperatures/diurnal range lead to physical weathering, producing a coarse, sandy soil texture A1","marks":1,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"gcse_geography__aqa","summaries":[{"id":"11b3317f-28be-4a71-ae94-94cc0766010d","difficultyBand":"medium","calculatorUse":null},{"id":"2131b5fd-99fd-4481-b83d-249ac4cc2cb7","difficultyBand":"easy","calculatorUse":null},{"id":"35a28201-3a72-4a4a-a185-3572c24d1213","difficultyBand":"medium","calculatorUse":null},{"id":"385e549e-d539-41f3-a48c-d10fe6c0e449","difficultyBand":"medium","calculatorUse":null},{

Hot deserts

Question 10

Hot deserts Questions

Hot deserts

Question 10

Hot deserts Questions