How did the volcanic eruption affect settlement patterns?
After the eruption the amount of settlement near the volcano decreased in the following years.
Comparing the population densities at various distances from the volcano before and after the eruption
Maps and statistics to estimate the population sizes at given distances
Concentric circles, to determine population density at various distances.
Compare effect of distance from volcano on population density before and after the eruption utilising a scatter graph.
What makes volcanic ash dangerous to humans?
Identify what volcanic ash is made of
Identify what human lungs are made of
Controlled experiment = leave some volcanic ash concentration? with human lung tissue
Investigate before and after condition of human lung tissue.
The HS investigation seems to be much less reliable. This is because there are many other factors that are going to affect settlement patterns rather than just the volcanic eruption. By comparing the settlement patterns before the eruption and years after there are going to be many other factors that affected settlement. For example, innovations in transportation technology would causes settlement to be more sparse. Increasing world populations causes settlements to be more dense. However, for the NS investigation there isn’t much that affects the reliability or credibility because many trials can be conducted in a controlled environment. stopping other factors form effecting the results. Chemical theories can be applied to make sure results are accurate and reliable. HS could potentially increase reliability but studying the effect of volcanoes across many different explosions in different places and times. This would allow the conclusions to be supported by many different eruptions. Therefore, anomalous factors affecting settlement would have much less of an effect on the trend in settlement.