OS maps: relief, contours, gradient and landscape features
Practise 30 exam-style questions on OS maps: relief, contours, gradient and landscape features for AQA GCSE Geography (Paper 1). Write your answer as you would in the exam and get it marked in seconds against the mark scheme, point by point, with an AI tutor on hand if you get stuck.
30 questions
1–6 marks each
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20 questions, marked as you go
Sample questions with model answers
Here are 4 of the questions in this topic, each with a model answer, an explanation of why it earns the marks and the mark scheme an examiner would use.
Question 1
1 mark
Study Figure 1, part of a 1:25 000 OS map of a river valley.
Name the river landform at A.
Model answer
An ox-bow lake.
Explanation
A is a crescent-shaped lake on the flat flood plain beside the meandering River Tarne, but it is not connected to the river. This horseshoe shape shows a former meander that has been cut off from the main channel.
Mark scheme
1 mark
Ox-bow lake
accept 'oxbow lake' or 'cut-off meander'; do not accept 'lake' or 'meander' on its own
Question 2
2 marks
Study Figure 1, part of a 1:25 000 OS map of a river valley.
Describe the shape of the land along the line from X to Y.
Model answer
From X at about 88 m the land slopes down gently to a wide, flat valley floor at about 37 m, which is about 1.4 km wide and is crossed by the River Tarne. It then rises gently up the northern valley side to about 106 m at Y, so the cross-section is a wide, shallow valley with a flat floor.
Explanation
Where contours are absent the land is flat: here a broad flood plain. Strong answers describe the shape (flat floor, gentle sides) and support it with heights and distances read from the contours.
Mark scheme
1 mark
A wide, flat valley floor (flood plain) about 1.4 km wide at about 37-42 m, crossed by the River Tarne
max 2; 1 mark for each accurate descriptive point; credit use of heights and distances
1 mark
Gently sloping valley sides rising to about 88 m at X and about 106 m at Y
credit 'gentle slopes' with any evidence, e.g. steepest about 1 in 10
1 mark
The overall shape is a wide, shallow, flat-floored valley; the northern side (towards Y) rises higher than the southern side (towards X)
Question 3
3 marks
Figure 1 is a cross-section drawn across a valley in an upland area of the UK.
Identify the type of valley shown. Use evidence from Figure 1 to support your answer.
Model answer
It is a glacial trough (a U-shaped valley). It has a wide, flat floor about 0.5 km across at about 150 m, and very steep sides: on the left the land falls from about 530 m to about 185 m in only about 0.65 km. The valley is nearly 500 m deep, from about 640 m at the top down to about 148 m on the floor.
Explanation
The shape of a cross-section tells you which process formed the valley: a flat floor with steep sides is the U-shape left by a glacier, whereas a river valley in the uplands is a narrow V. Quoting heights and distances from the graph gives the evidence.
Mark scheme
1 mark
A glacial trough / U-shaped valley
accept 'a valley eroded by a glacier'; do not accept 'V-shaped valley' or 'river valley'
1 mark
Evidence: a wide, flat valley floor, about 0.5-0.6 km wide (from about 1.3 km to 1.85 km), at about 150 m
max 2 for evidence; credit evidence with data even if the valley type is wrong
1 mark
Evidence: very steep valley sides, e.g. falling about 345 m (from about 530 m to 185 m) in about 0.65 km on the left-hand side
1 mark
Evidence: a deep valley, nearly 500 m deep (from about 640 m and 625 m at the edges down to about 148 m)
Question 4
4 marks
Study Figure 1, part of a 1:50 000 OS map of a glaciated upland.
Using map evidence, describe the drainage of the area shown.
Model answer
The main river, Skell Beck, enters the map at the east edge and flows south-west along the floor of Skelldale into Skell Water, a ribbon lake about 1.5 km long with its surface at about 133 m. It flows out of the western end of the lake and off the west edge of the map. Raise Gill flows south-east from a hanging valley, drops over a waterfall at about 714276 and joins Skell Beck at about 717270. In the north-west, Blea Beck drains Blea Tarn, a small corrie lake at about 383 m, and flows north-west off the map. The streams are fairly straight, and the high ridge of Grey Pike has no streams on it.
Explanation
Drainage means the rivers, streams and lakes and how they are arranged. Describe where each river flows, its direction, the lakes it passes through and where tributaries join, using grid references; in a glaciated area the lakes (tarns, ribbon lakes) and waterfalls from hanging valleys are distinctive.
Mark scheme
1 mark
Skell Beck, the main river, enters at the east edge (about 750288) and flows south-west along the floor of Skelldale
max 4; 1 mark for each accurate descriptive point using map evidence
1 mark
Skell Beck flows into and out of a long ribbon lake, Skell Water (about 1.5 km long, surface about 133 m), then leaves the map at the west edge (about 710268)
1 mark
Raise Gill enters from the west edge, flows south-east through the hanging valley, drops by a waterfall (about 714276) and joins Skell Beck at a confluence at about 717270
credit the steep fall of Raise Gill (about 220 m in 1.7 km)
1 mark
Blea Beck drains Blea Tarn, a small corrie lake at about 383 m (719295), and flows north-west off the north edge
1 mark
The streams have fairly straight courses with no meanders, and there are few streams on the high ridges and peak, which act as a watershed
credit other accurate points
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