Question 1
Study Figure 1a and Figure 1b which show the magnitude and duration of eight selected earthquakes.
| Earthquake | Earthquake magnitude Moment Magnitude Scale (MMS) | Duration in seconds |
| A | 6.9 | 120 |
| B | 5.4 | 1 |
| C | 9.0 | ................................................... |
| D | 6.8 | 6.8 |
| E | 6.9 | 280 |
| F | 7.3 | 24 |
| G | 6.4 | 5.9 |
| H | 7.0 | 7.8 |
Using Figure 1b complete Figure 1a by stating the duration of earthquake C.
(1)
Answer
Complete Figure 1b by plotting earthquake F using the data from Figure 1a.
(2)
Answer
Draw a regression (best-fit) line on Figure 1b to show the relationship between earthquake magnitude and duration.
(1)
Answer
Assess the view that the social and economic impacts of earthquakes are mainly the result of their magnitude.
(12)
Answer