Questions 31-35
Answer the questions below.
Write NO MORE THAN THREE WORDS AND/OR A NUMBER for each answer.
31. When did Mt. Pinatubo erupt for the first time?
31
32. When was the earthquake measuring 7.8 recorded?
32
33. When did the experts begin to study Mt. Pinatubo?
33
34. What fell on the local villages on 2nd April?
34
35. What does a 'Level 5' alert mean?
35
Questions 36-40
Complete the summary below.
Write NO MORE THAN THREE WORDS for each answer.
Several large earthquakes were triggered by the eruption of Pinatubo on 15th June 1991 because of the 36 of the summit. The 'caldera' thus created considerably reduced the height of the mountain. At the same time a 37 was passing by and the rain associated with it mixed with the cinders in the air to form a substance called 'tephra' which fell on the 38 of homes causing them to collapse, crushing hundreds of people.
During the eruption, large amounts of sulphur dioxide gas were emitted, which combined with 39 to make sulphuric acid which was responsible for a great deal of ozone depletion above Antarctica. The overall effect of the cloud from this great eruption was the lowering of 40.