Data Interpretation

Data Interpretation

Introduction

To begin in some sort of form our geography class was split into 7

groups of 4 people in so that it was easier and faster to obtain,

observe and record our results from the 7 specific sites chosen on the

River Alyn. I am in group 7. Out of the 7 sites our geography class

only visited 2. The other 5 sites were visited by other geography

classes in the year within a space of 3-4 so that conditions had not

varied much.

The River Alyn is situated in North Wales and is tributary of the

River Dee (see fig.1, page 8) The 2 sites that my class visited were

Llanferres and Pontblyddyn. Llanferres is the furthest upstream and

Pontblyddyn is the second to furthest downstream. The results from all

of the other sites visited were inputted onto the school computers and

then printed out for our needs.

Methodology-Hypothesis

I will be investigating the pollution of the R.Alyn. I have chosen to

investigate the pollution of the R.Alyn as I think that scientific

tests will give me better results to work from. I believe that the

pollution of the R.Alyn will decrease downstream until peaks of high

pollution will occur at the Sewage works (192635), Chemical works

(234649) and also at Mold Ruby Club (245644) I believe that after

these sites the pollution of the R.Alyn will decrease to site 7, Hope

(283603). For positions of the other sites see (fig.2, page 9).

Reasons for Hypothesis

I believe that the pollution will decrease downstream until and after

the points of high pollution because as the river flows it obtains

more oxygen from the air. Air bubbles are produced at the surface of

the river as ...

... middle of paper ...

...een drawn from my

results. I have put all of my figures after this page but I will only

be concentrating on the following figures for my data interpretation:

Ÿ Figure 7, Bar chart to compare the colour and the suspended solids

of the R.Alyn.

Ÿ Figure 8, Stack bar graph to show total number of animals found at

the 7 sites.

Ÿ Figure 9, Line bar graph to show nitrate and Ammonium levels at 7

sites.

Ÿ Figure 10, Line bar graph to show Oxygen level in R.Alyn.

Ÿ Figure 11, Bar chart to compare foaming test results with Turbidity

test results of R.Alyn.

Figure numbers for results

Ÿ Figure 12, Results booklet containing results for Llanferres and

Pontblyddyn on the day

Ÿ Figures 13-19, Results for Llanferres, Loggerheads, Sewage Works,

Chemical Works, Mold Rugby Club, Pontblyddyn and Hope