This task is about interpreting a map and identifying issues about volcanic ash.
Below is a map of an area affected by ash fall from a volcanic eruption.
The numbers, e.g., 15, represent the limit of ash for that depth in centimetres (cm).
| a) |
Draw curved lines to join all the numbers which are the same, This will show the limits of ash for the five different depths.
(NOTE: You can draw lines through the lakes, but do not draw lines in the ocean. Draw lines to the coast or the edge of the map where appropriate).
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| b) |
At point Y on the map, what would be the approximate depth of ash? __________ cm.
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| c) |
What description about ash fall should be given to the line labelled X?
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| d) | i) |
Draw a letter V on the map to show the point where the erupting volcano probably was located.
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| ii) |
What evidence did you use to decide on the location of this volcano?
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e)
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From which direction was the wind probably blowing when this eruption occurred?
____________________
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| f) |
Explain three major problems this ash could cause if there were towns nearby.
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| 1. |
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| 2. |
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| 3. |
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