ORDINARY LEVEL 2. Read the newspaper article and answer each of the following questions. Earthquake in the Irish Sea
A 3.8 magnitude earthquake struck this morning. The epicentre was located approximately 2 km off the coast of the Lleyn Peninsula in Wales and was 97 km southeast of Dublin. The quake was followed four minutes later by a smaller 1.7 magnitude tremor.
Moderate shaking was felt in Carlow, Kildare, Wicklow, Wexford and Dublin. Earthquake stations as far away as Valentia, Donegal and Galway also recorded the earthquake.
Adapted from the Irish Independent, 28 June, 2013
(i) What direction from Dublin was the epicentre of the earthquake and how far, in kilometres, was the epicentre from Dublin?
(ii) Name two locations in Ireland where the earthquake was felt.
(iii) What is the term given to the smaller tremors which follow the main earthquake?
(iv) State two effects of earthquakes.
(v) Explain briefly why Ireland has not experienced major earthquakes.
3. Study the map of an earthquake in Italy and answer the following questions:
(i) What was the magnitude (strength) of the earthquake at the epicentre?
(ii) At what time did the earthquake take place?
(iii) How many towns reported deaths as a result of the earthquake?
(iv) Explain in detail how earthquakes occur.
2010 Q2B 40M
(i) 2m (ii) 2m (iii) 3m
(iv) 11 SRPs @ 3m each Epicentre
Abruzzo Region • Magnitude 6.3 • Depth 10 km • Time 1.32 pm
Towns reporting deaths Rome
Aftershock 4.4 magnitude
(i) 2 x 3m (ii) 2 x 3m (iii) 6m
(iv) 2 x 3m (v) 2 x 3m
2014 Q1A 30M
Aftershock 4.8 magnitude
Epicentre 6.3 magnitude
L’Aquila
I T A L Y
PATTERNS AND PROCESSES IN THE PHYSICAL ENVIRONMENT
