O-LevelGeographyThe natural environment2217/22 · Oct/Nov 2016 · Q48 Marks
Study Fig. 4, which shows volcanoes in the west of the USA, active during the last 2000 years.
- (a)(i)Describe the distribution of volcanoes active during the last 2000 years.[3]
- (a)(ii)Suggest reasons why many of the volcanoes are in a line.[2]
- (b)(i)Which volcano is most active?[1]
- (b)(ii)Which two volcanoes have not erupted in 4000 years?[1]
- (b)(iii)Which volcano was dormant for 2000 years between two eruptions?[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- [3] All in W / NW
- Within 400 km of coast
- North - south line/parallel to coastline
- 5 in Washington }/ most in Washington and Oregon
- 5 in Oregon }/ most in Washington and Oregon
- 3 in California
- On/at/near coast = 0
- In a line = 0
- [2] Linear weakness in the crust/fault
- On/parallel to the plate boundary/a subduction zone
- Plate boundary runs north - south
- [1] St Helens
- [1] (Mt) Jefferson and (Mt) Mazama
- [1] Newberry
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